BELGIUM -- SPOT EXCHANGE RATE, FRANCS/US$ ----------------------------------------- 4-Jan-71 49.7000 5-Jan-71 49.6800 6-Jan-71 49.6700 7-Jan-71 49.6600 8-Jan-71 49.6400 11-Jan-71 49.6400 12-Jan-71 49.6400 13-Jan-71 49.6300 14-Jan-71 49.6300 15-Jan-71 49.6300 18-Jan-71 49.6300 19-Jan-71 49.6300 20-Jan-71 49.6300 21-Jan-71 49.6300 22-Jan-71 49.6300 25-Jan-71 49.6400 26-Jan-71 49.6300 27-Jan-71 49.6300 28-Jan-71 49.6300 29-Jan-71 49.6300 1-Feb-71 49.6300 2-Feb-71 49.6400 3-Feb-71 49.6300 4-Feb-71 49.6300 5-Feb-71 49.6300 8-Feb-71 49.6400 9-Feb-71 49.6300 10-Feb-71 49.6400 11-Feb-71 49.6400 12-Feb-71 ND 15-Feb-71 ND 16-Feb-71 49.6300 17-Feb-71 49.6300 18-Feb-71 49.6300 19-Feb-71 49.6300 22-Feb-71 49.6300 23-Feb-71 49.6300 24-Feb-71 49.6300 25-Feb-71 49.6300 26-Feb-71 49.6300 1-Mar-71 49.6400 2-Mar-71 49.6400 3-Mar-71 49.6400 4-Mar-71 49.6300 5-Mar-71 49.6300 8-Mar-71 49.6300 9-Mar-71 49.6300 10-Mar-71 49.6300 11-Mar-71 49.6300 12-Mar-71 49.6300 15-Mar-71 49.6400 16-Mar-71 49.6400 17-Mar-71 49.6400 18-Mar-71 49.6500 19-Mar-71 49.6500 22-Mar-71 49.6500 23-Mar-71 49.6500 24-Mar-71 49.6500 25-Mar-71 49.6500 26-Mar-71 49.6500 29-Mar-71 49.6500 30-Mar-71 49.6400 31-Mar-71 49.6300 1-Apr-71 49.6300 2-Apr-71 49.6300 5-Apr-71 49.6400 6-Apr-71 49.6500 7-Apr-71 49.6400 8-Apr-71 49.6600 9-Apr-71 49.6600 12-Apr-71 49.6500 13-Apr-71 49.6800 14-Apr-71 49.6800 15-Apr-71 49.6400 16-Apr-71 49.6300 19-Apr-71 49.6500 20-Apr-71 49.6400 21-Apr-71 49.6300 22-Apr-71 49.6300 23-Apr-71 49.6300 26-Apr-71 49.6400 27-Apr-71 49.6400 28-Apr-71 49.6300 29-Apr-71 49.6300 30-Apr-71 49.6300 3-May-71 49.6300 4-May-71 49.6300 5-May-71 49.6200 6-May-71 49.5600 7-May-71 49.4900 10-May-71 49.0900 11-May-71 49.6300 12-May-71 49.6300 13-May-71 49.6300 14-May-71 49.6300 17-May-71 49.6300 18-May-71 49.6300 19-May-71 49.6300 20-May-71 49.6300 21-May-71 49.6300 24-May-71 49.6300 25-May-71 49.6300 26-May-71 49.6300 27-May-71 49.6500 28-May-71 49.6400 31-May-71 ND 1-Jun-71 49.6500 2-Jun-71 49.6600 3-Jun-71 49.6400 4-Jun-71 49.6300 7-Jun-71 49.6400 8-Jun-71 49.6500 9-Jun-71 49.6600 10-Jun-71 49.6900 11-Jun-71 49.7000 14-Jun-71 49.7300 15-Jun-71 49.8100 16-Jun-71 49.7900 17-Jun-71 49.8600 18-Jun-71 49.8200 21-Jun-71 49.8600 22-Jun-71 49.7600 23-Jun-71 49.6900 24-Jun-71 49.7000 25-Jun-71 49.7200 28-Jun-71 49.8200 29-Jun-71 49.8000 30-Jun-71 49.7500 1-Jul-71 49.7900 2-Jul-71 49.7600 5-Jul-71 ND 6-Jul-71 49.7800 7-Jul-71 49.7400 8-Jul-71 49.7300 9-Jul-71 49.7100 12-Jul-71 49.6500 13-Jul-71 49.6500 14-Jul-71 49.6300 15-Jul-71 49.6400 16-Jul-71 49.6300 19-Jul-71 49.6400 20-Jul-71 49.6400 21-Jul-71 49.6300 22-Jul-71 49.6300 23-Jul-71 49.6300 26-Jul-71 49.6300 27-Jul-71 49.6400 28-Jul-71 49.6400 29-Jul-71 49.6400 30-Jul-71 49.6300 2-Aug-71 49.6500 3-Aug-71 49.6600 4-Aug-71 49.6300 5-Aug-71 49.6300 6-Aug-71 49.6300 9-Aug-71 49.6300 10-Aug-71 49.6400 11-Aug-71 49.6300 12-Aug-71 49.6300 13-Aug-71 49.6300 16-Aug-71 ND 17-Aug-71 ND 18-Aug-71 ND 19-Aug-71 ND 20-Aug-71 ND 23-Aug-71 48.9000 24-Aug-71 48.5400 25-Aug-71 48.4100 26-Aug-71 48.3700 27-Aug-71 48.4200 30-Aug-71 48.1800 31-Aug-71 48.3100 1-Sep-71 48.4200 2-Sep-71 48.3000 3-Sep-71 48.3400 6-Sep-71 ND 7-Sep-71 48.3400 8-Sep-71 48.3600 9-Sep-71 48.3700 10-Sep-71 48.3300 13-Sep-71 48.2100 14-Sep-71 48.0900 15-Sep-71 48.0200 16-Sep-71 48.0600 17-Sep-71 47.9800 20-Sep-71 47.6700 21-Sep-71 47.5100 22-Sep-71 47.3600 23-Sep-71 47.1300 24-Sep-71 46.9700 27-Sep-71 47.1300 28-Sep-71 47.1600 29-Sep-71 47.1000 30-Sep-71 47.0500 1-Oct-71 47.0600 4-Oct-71 47.0800 5-Oct-71 47.1000 6-Oct-71 47.0300 7-Oct-71 46.9400 8-Oct-71 46.7100 11-Oct-71 ND 12-Oct-71 46.7700 13-Oct-71 46.8300 14-Oct-71 46.9200 15-Oct-71 46.8900 18-Oct-71 46.8600 19-Oct-71 46.8100 20-Oct-71 46.7300 21-Oct-71 46.7500 22-Oct-71 46.7300 25-Oct-71 ND 26-Oct-71 46.6900 27-Oct-71 47.1000 28-Oct-71 46.6300 29-Oct-71 46.6200 1-Nov-71 46.6100 2-Nov-71 ND 3-Nov-71 46.4900 4-Nov-71 46.4400 5-Nov-71 46.4000 8-Nov-71 46.4000 9-Nov-71 46.4000 10-Nov-71 46.4700 11-Nov-71 46.4700 12-Nov-71 46.4700 15-Nov-71 46.4700 16-Nov-71 46.4900 17-Nov-71 46.4600 18-Nov-71 46.4400 19-Nov-71 46.2300 22-Nov-71 46.2000 23-Nov-71 46.1200 24-Nov-71 45.9700 25-Nov-71 ND 26-Nov-71 46.1400 29-Nov-71 46.1900 30-Nov-71 46.2700 1-Dec-71 46.1100 2-Dec-71 45.9200 3-Dec-71 45.6800 6-Dec-71 45.5700 7-Dec-71 45.6600 8-Dec-71 45.8500 9-Dec-71 45.7500 10-Dec-71 45.7400 13-Dec-71 45.6600 14-Dec-71 45.5200 15-Dec-71 45.5100 16-Dec-71 45.5500 17-Dec-71 45.5400 20-Dec-71 ND 21-Dec-71 45.3900 22-Dec-71 45.3600 23-Dec-71 45.2500 24-Dec-71 45.1500 27-Dec-71 45.2600 28-Dec-71 45.2500 29-Dec-71 45.2400 30-Dec-71 44.8900 31-Dec-71 44.8200 3-Jan-72 44.9400 4-Jan-72 45.0000 5-Jan-72 44.9400 6-Jan-72 44.9400 7-Jan-72 44.8800 10-Jan-72 44.7700 11-Jan-72 44.7000 12-Jan-72 44.5400 13-Jan-72 44.4400 14-Jan-72 44.2300 17-Jan-72 44.2000 18-Jan-72 44.2200 19-Jan-72 44.2300 20-Jan-72 44.2000 21-Jan-72 44.2500 24-Jan-72 44.1600 25-Jan-72 44.0400 26-Jan-72 44.0500 27-Jan-72 44.0300 28-Jan-72 44.0300 31-Jan-72 43.9900 1-Feb-72 43.8800 2-Feb-72 43.8100 3-Feb-72 43.8400 4-Feb-72 43.9200 7-Feb-72 43.8800 8-Feb-72 43.8500 9-Feb-72 43.8400 10-Feb-72 43.8200 11-Feb-72 43.8300 14-Feb-72 43.8600 15-Feb-72 43.8400 16-Feb-72 43.8400 17-Feb-72 43.8200 18-Feb-72 43.8100 21-Feb-72 ND 22-Feb-72 43.8200 23-Feb-72 43.8200 24-Feb-72 43.8200 25-Feb-72 43.8200 28-Feb-72 43.8400 29-Feb-72 43.8600 1-Mar-72 43.8300 2-Mar-72 43.8200 3-Mar-72 43.8200 6-Mar-72 43.8200 7-Mar-72 43.8100 8-Mar-72 43.8000 9-Mar-72 43.8600 10-Mar-72 43.9500 13-Mar-72 43.9200 14-Mar-72 43.9200 15-Mar-72 43.9800 16-Mar-72 43.9600 17-Mar-72 44.0100 20-Mar-72 44.0300 21-Mar-72 43.9700 22-Mar-72 43.9700 23-Mar-72 44.0500 24-Mar-72 44.1100 27-Mar-72 44.0200 28-Mar-72 44.0200 29-Mar-72 44.0000 30-Mar-72 43.9900 31-Mar-72 44.0000 3-Apr-72 43.9700 4-Apr-72 43.9900 5-Apr-72 43.9900 6-Apr-72 43.9900 7-Apr-72 44.0100 10-Apr-72 44.0000 11-Apr-72 44.0000 12-Apr-72 44.0600 13-Apr-72 44.1200 14-Apr-72 44.1400 17-Apr-72 44.1800 18-Apr-72 44.3200 19-Apr-72 44.3200 20-Apr-72 44.1500 21-Apr-72 44.1200 24-Apr-72 44.1200 25-Apr-72 44.1000 26-Apr-72 44.2200 27-Apr-72 44.1900 28-Apr-72 44.1300 1-May-72 44.1100 2-May-72 44.0600 3-May-72 44.0200 4-May-72 44.0200 5-May-72 44.0700 8-May-72 44.0800 9-May-72 43.9900 10-May-72 43.9300 11-May-72 44.0100 12-May-72 43.9800 15-May-72 44.0100 16-May-72 44.0300 17-May-72 43.9900 18-May-72 43.9700 19-May-72 43.9400 22-May-72 43.9400 23-May-72 43.9400 24-May-72 43.9100 25-May-72 43.9100 26-May-72 43.9300 29-May-72 ND 30-May-72 43.9000 31-May-72 43.8600 1-Jun-72 43.8300 2-Jun-72 43.8300 5-Jun-72 43.8700 6-Jun-72 43.9100 7-Jun-72 43.8800 8-Jun-72 43.8700 9-Jun-72 43.8900 12-Jun-72 43.9000 13-Jun-72 43.8600 14-Jun-72 43.8200 15-Jun-72 43.9100 16-Jun-72 44.0500 19-Jun-72 44.0600 20-Jun-72 44.1700 21-Jun-72 44.2500 22-Jun-72 44.4500 23-Jun-72 43.8300 26-Jun-72 43.8100 27-Jun-72 43.9600 28-Jun-72 43.8900 29-Jun-72 43.8600 30-Jun-72 43.8200 3-Jul-72 43.8200 4-Jul-72 ND 5-Jul-72 43.8300 6-Jul-72 43.8200 7-Jul-72 43.8200 10-Jul-72 43.8200 11-Jul-72 43.8500 12-Jul-72 43.8400 13-Jul-72 43.8200 14-Jul-72 43.8000 17-Jul-72 43.8600 18-Jul-72 43.8300 19-Jul-72 43.8400 20-Jul-72 43.8600 21-Jul-72 43.8500 24-Jul-72 43.8600 25-Jul-72 43.8300 26-Jul-72 43.8200 27-Jul-72 43.8200 28-Jul-72 43.8400 31-Jul-72 43.8200 1-Aug-72 43.8200 2-Aug-72 43.8200 3-Aug-72 43.8200 4-Aug-72 43.8200 7-Aug-72 43.8100 8-Aug-72 43.8200 9-Aug-72 43.8200 10-Aug-72 43.8200 11-Aug-72 43.8400 14-Aug-72 43.8400 15-Aug-72 43.8400 16-Aug-72 43.8800 17-Aug-72 43.8900 18-Aug-72 43.8800 21-Aug-72 43.9200 22-Aug-72 43.8700 23-Aug-72 43.8700 24-Aug-72 43.8800 25-Aug-72 43.9300 28-Aug-72 43.9400 29-Aug-72 43.9800 30-Aug-72 43.9300 31-Aug-72 43.9500 1-Sep-72 43.9500 4-Sep-72 ND 5-Sep-72 43.9500 6-Sep-72 43.9300 7-Sep-72 43.8900 8-Sep-72 43.9000 11-Sep-72 43.9000 12-Sep-72 43.9200 13-Sep-72 43.9100 14-Sep-72 43.9100 15-Sep-72 43.9400 18-Sep-72 43.9800 19-Sep-72 43.9900 20-Sep-72 43.9700 21-Sep-72 43.9600 22-Sep-72 43.9500 25-Sep-72 43.9600 26-Sep-72 44.0300 27-Sep-72 44.0400 28-Sep-72 44.1100 29-Sep-72 44.2500 2-Oct-72 44.3600 3-Oct-72 44.3700 4-Oct-72 44.1800 5-Oct-72 44.0500 6-Oct-72 44.1000 9-Oct-72 ND 10-Oct-72 44.1500 11-Oct-72 44.1800 12-Oct-72 44.2100 13-Oct-72 44.1600 16-Oct-72 44.1800 17-Oct-72 44.1700 18-Oct-72 44.1500 19-Oct-72 44.1400 20-Oct-72 44.1400 23-Oct-72 ND 24-Oct-72 44.1700 25-Oct-72 44.1200 26-Oct-72 44.1300 27-Oct-72 44.1600 30-Oct-72 44.1800 31-Oct-72 44.1200 1-Nov-72 44.0900 2-Nov-72 44.1000 3-Nov-72 44.1100 6-Nov-72 44.1300 7-Nov-72 ND 8-Nov-72 44.1200 9-Nov-72 44.1000 10-Nov-72 44.0900 13-Nov-72 44.1000 14-Nov-72 44.1000 15-Nov-72 44.0900 16-Nov-72 44.0200 17-Nov-72 44.0800 20-Nov-72 44.1000 21-Nov-72 44.0900 22-Nov-72 44.0600 23-Nov-72 ND 24-Nov-72 44.0700 27-Nov-72 44.0200 28-Nov-72 44.0600 29-Nov-72 44.0400 30-Nov-72 44.0600 1-Dec-72 44.0700 4-Dec-72 44.0900 5-Dec-72 44.0800 6-Dec-72 44.0400 7-Dec-72 44.0600 8-Dec-72 44.0700 11-Dec-72 44.0900 12-Dec-72 44.1000 13-Dec-72 44.0900 14-Dec-72 44.0900 15-Dec-72 44.1500 18-Dec-72 44.1400 19-Dec-72 44.2000 20-Dec-72 44.1600 21-Dec-72 44.1200 22-Dec-72 44.1700 25-Dec-72 ND 26-Dec-72 44.1900 27-Dec-72 44.1500 28-Dec-72 44.1100 29-Dec-72 44.0700 1-Jan-73 ND 2-Jan-73 44.0900 3-Jan-73 44.1000 4-Jan-73 44.2300 5-Jan-73 44.2300 8-Jan-73 44.1900 9-Jan-73 44.1800 10-Jan-73 44.1400 11-Jan-73 44.1700 12-Jan-73 44.1800 15-Jan-73 44.2300 16-Jan-73 44.2500 17-Jan-73 44.2400 18-Jan-73 44.2500 19-Jan-73 44.2600 22-Jan-73 44.1000 23-Jan-73 44.1000 24-Jan-73 44.0600 25-Jan-73 44.0400 26-Jan-73 44.0400 29-Jan-73 43.9700 30-Jan-73 43.8200 31-Jan-73 43.8200 1-Feb-73 43.7700 2-Feb-73 43.9000 5-Feb-73 43.8700 6-Feb-73 43.8900 7-Feb-73 43.8300 8-Feb-73 43.8100 9-Feb-73 43.8100 12-Feb-73 ND 13-Feb-73 41.3700 14-Feb-73 40.9400 15-Feb-73 40.9000 16-Feb-73 40.8300 19-Feb-73 ND 20-Feb-73 40.8200 21-Feb-73 40.8100 22-Feb-73 40.4300 23-Feb-73 39.8400 26-Feb-73 39.8000 27-Feb-73 39.7900 28-Feb-73 39.4500 1-Mar-73 39.3700 2-Mar-73 38.8300 5-Mar-73 39.3000 6-Mar-73 39.2200 7-Mar-73 39.3000 8-Mar-73 39.1000 9-Mar-73 38.9900 12-Mar-73 38.4600 13-Mar-73 38.7600 14-Mar-73 39.3700 15-Mar-73 39.3000 16-Mar-73 39.4100 19-Mar-73 39.7200 20-Mar-73 39.6500 21-Mar-73 39.6800 22-Mar-73 39.6000 23-Mar-73 39.6400 26-Mar-73 39.6700 27-Mar-73 39.7300 28-Mar-73 39.8100 29-Mar-73 39.9500 30-Mar-73 40.1200 2-Apr-73 40.2000 3-Apr-73 40.3100 4-Apr-73 40.0500 5-Apr-73 39.9800 6-Apr-73 40.0600 9-Apr-73 40.0500 10-Apr-73 40.0800 11-Apr-73 40.0500 12-Apr-73 40.0400 13-Apr-73 40.0600 16-Apr-73 40.1000 17-Apr-73 40.1100 18-Apr-73 40.1800 19-Apr-73 40.2600 20-Apr-73 40.2300 23-Apr-73 40.2100 24-Apr-73 40.2600 25-Apr-73 40.3000 26-Apr-73 40.3100 27-Apr-73 40.3600 30-Apr-73 40.3400 1-May-73 40.3100 2-May-73 40.2900 3-May-73 40.2700 4-May-73 40.2700 7-May-73 40.3000 8-May-73 40.2700 9-May-73 40.1600 10-May-73 40.1600 11-May-73 40.0800 14-May-73 39.5500 15-May-73 39.1000 16-May-73 39.1700 17-May-73 39.2800 18-May-73 39.1800 21-May-73 38.6600 22-May-73 38.7200 23-May-73 38.7100 24-May-73 38.8300 25-May-73 38.9600 28-May-73 ND 29-May-73 38.6700 30-May-73 38.5000 31-May-73 38.4800 1-Jun-73 38.0400 4-Jun-73 37.4000 5-Jun-73 37.3800 6-Jun-73 38.1700 7-Jun-73 38.3000 8-Jun-73 37.9800 11-Jun-73 38.0200 12-Jun-73 37.9000 13-Jun-73 38.0200 14-Jun-73 37.9900 15-Jun-73 37.7700 18-Jun-73 37.5600 19-Jun-73 37.6000 20-Jun-73 37.6100 21-Jun-73 37.4500 22-Jun-73 37.3400 25-Jun-73 37.3500 26-Jun-73 37.2400 27-Jun-73 36.8300 28-Jun-73 36.2200 29-Jun-73 36.2000 2-Jul-73 35.9700 3-Jul-73 35.9700 4-Jul-73 ND 5-Jul-73 35.1200 6-Jul-73 34.5400 9-Jul-73 34.7200 10-Jul-73 36.5500 11-Jul-73 36.5500 12-Jul-73 36.1000 13-Jul-73 36.0800 16-Jul-73 35.8400 17-Jul-73 35.2500 18-Jul-73 35.0800 19-Jul-73 35.7000 20-Jul-73 35.4500 23-Jul-73 35.2000 24-Jul-73 35.2400 25-Jul-73 35.2300 26-Jul-73 35.1500 27-Jul-73 35.2700 30-Jul-73 35.6100 31-Jul-73 35.5200 1-Aug-73 35.5000 2-Aug-73 35.6800 3-Aug-73 35.7100 6-Aug-73 36.1000 7-Aug-73 35.9600 8-Aug-73 36.0000 9-Aug-73 36.1700 10-Aug-73 36.6000 13-Aug-73 36.7000 14-Aug-73 37.4200 15-Aug-73 37.4500 16-Aug-73 37.9100 17-Aug-73 37.8400 20-Aug-73 36.9900 21-Aug-73 37.5500 22-Aug-73 37.7300 23-Aug-73 37.9000 24-Aug-73 37.6600 27-Aug-73 37.7300 28-Aug-73 37.7500 29-Aug-73 37.5400 30-Aug-73 37.6400 31-Aug-73 37.6400 3-Sep-73 ND 4-Sep-73 37.5500 5-Sep-73 37.2800 6-Sep-73 37.3100 7-Sep-73 37.1300 10-Sep-73 37.2400 11-Sep-73 37.3300 12-Sep-73 37.2900 13-Sep-73 37.3200 14-Sep-73 37.3000 17-Sep-73 36.4600 18-Sep-73 36.4300 19-Sep-73 36.5600 20-Sep-73 36.1300 21-Sep-73 36.3500 24-Sep-73 36.5200 25-Sep-73 36.6300 26-Sep-73 36.7500 27-Sep-73 37.0500 28-Sep-73 36.8200 1-Oct-73 36.9300 2-Oct-73 36.9100 3-Oct-73 36.8900 4-Oct-73 36.9100 5-Oct-73 37.0000 8-Oct-73 ND 9-Oct-73 36.9000 10-Oct-73 36.7300 11-Oct-73 36.5500 12-Oct-73 36.4600 15-Oct-73 36.4600 16-Oct-73 36.2400 17-Oct-73 36.1600 18-Oct-73 36.2300 19-Oct-73 36.3500 22-Oct-73 ND 23-Oct-73 36.1300 24-Oct-73 36.1400 25-Oct-73 36.2700 26-Oct-73 36.5200 29-Oct-73 36.8700 30-Oct-73 36.9500 31-Oct-73 36.8700 1-Nov-73 36.8000 2-Nov-73 36.8000 5-Nov-73 37.1500 6-Nov-73 ND 7-Nov-73 37.8500 8-Nov-73 37.8100 9-Nov-73 38.1100 12-Nov-73 39.0900 13-Nov-73 38.9500 14-Nov-73 38.6000 15-Nov-73 38.8300 16-Nov-73 38.7600 19-Nov-73 38.8000 20-Nov-73 38.9300 21-Nov-73 38.9700 22-Nov-73 ND 23-Nov-73 39.8000 26-Nov-73 39.6100 27-Nov-73 39.5800 28-Nov-73 39.5300 29-Nov-73 39.6700 30-Nov-73 39.5500 3-Dec-73 39.7700 4-Dec-73 40.2000 5-Dec-73 40.0800 6-Dec-73 39.9400 7-Dec-73 40.1000 10-Dec-73 40.2200 11-Dec-73 40.2500 12-Dec-73 40.2100 13-Dec-73 40.2300 14-Dec-73 40.1900 17-Dec-73 40.2400 18-Dec-73 40.3000 19-Dec-73 40.3800 20-Dec-73 40.4900 21-Dec-73 40.6700 24-Dec-73 40.7000 25-Dec-73 ND 26-Dec-73 41.1900 27-Dec-73 41.2400 28-Dec-73 41.2500 31-Dec-73 41.3100 1-Jan-74 ND 2-Jan-74 41.9300 3-Jan-74 41.9500 4-Jan-74 42.1300 7-Jan-74 43.3500 8-Jan-74 43.5400 9-Jan-74 42.6900 10-Jan-74 42.5500 11-Jan-74 42.3000 14-Jan-74 42.6000 15-Jan-74 43.1000 16-Jan-74 42.8600 17-Jan-74 42.9700 18-Jan-74 42.8400 21-Jan-74 44.0100 22-Jan-74 43.6000 23-Jan-74 43.7600 24-Jan-74 43.0500 25-Jan-74 43.2000 28-Jan-74 43.1000 29-Jan-74 42.9200 30-Jan-74 42.5700 31-Jan-74 42.1500 1-Feb-74 42.1900 4-Feb-74 41.8800 5-Feb-74 41.8400 6-Feb-74 41.7100 7-Feb-74 41.7000 8-Feb-74 41.6500 11-Feb-74 41.5600 12-Feb-74 ND 13-Feb-74 41.2900 14-Feb-74 40.9800 15-Feb-74 40.8500 18-Feb-74 ND 19-Feb-74 40.6000 20-Feb-74 40.6600 21-Feb-74 40.4400 22-Feb-74 40.0500 25-Feb-74 40.4500 26-Feb-74 40.4000 27-Feb-74 40.5700 28-Feb-74 40.3100 1-Mar-74 40.4800 4-Mar-74 40.4300 5-Mar-74 40.2300 6-Mar-74 40.3700 7-Mar-74 40.3700 8-Mar-74 40.2600 11-Mar-74 40.1900 12-Mar-74 40.1500 13-Mar-74 40.1400 14-Mar-74 40.3200 15-Mar-74 40.1400 18-Mar-74 40.2000 19-Mar-74 40.1600 20-Mar-74 40.0000 21-Mar-74 39.5000 22-Mar-74 39.6800 25-Mar-74 39.2000 26-Mar-74 39.2500 27-Mar-74 39.5300 28-Mar-74 38.9500 29-Mar-74 39.2200 1-Apr-74 39.2900 2-Apr-74 39.1400 3-Apr-74 39.2500 4-Apr-74 39.2900 5-Apr-74 39.1400 8-Apr-74 39.0200 9-Apr-74 39.2500 10-Apr-74 39.4300 11-Apr-74 39.4300 12-Apr-74 39.4500 15-Apr-74 39.4500 16-Apr-74 39.4900 17-Apr-74 39.2200 18-Apr-74 39.1100 19-Apr-74 39.1700 22-Apr-74 38.8700 23-Apr-74 38.3700 24-Apr-74 38.3300 25-Apr-74 38.4300 26-Apr-74 38.2400 29-Apr-74 37.4800 30-Apr-74 37.9500 1-May-74 37.8500 2-May-74 37.9500 3-May-74 37.9500 6-May-74 37.6800 7-May-74 37.7700 8-May-74 37.4500 9-May-74 37.3800 10-May-74 37.3800 13-May-74 37.0200 14-May-74 36.8000 15-May-74 37.5500 16-May-74 37.5600 17-May-74 37.7000 20-May-74 37.9000 21-May-74 37.7500 22-May-74 37.5200 23-May-74 37.4100 24-May-74 37.5100 27-May-74 ND 28-May-74 37.9400 29-May-74 38.2000 30-May-74 38.1500 31-May-74 37.9900 3-Jun-74 37.8200 4-Jun-74 37.8100 5-Jun-74 37.6000 6-Jun-74 37.5800 7-Jun-74 37.6600 10-Jun-74 37.8100 11-Jun-74 37.9000 12-Jun-74 38.0400 13-Jun-74 37.9900 14-Jun-74 37.8600 17-Jun-74 37.8900 18-Jun-74 37.9100 19-Jun-74 37.9400 20-Jun-74 38.0200 21-Jun-74 38.1000 24-Jun-74 38.3900 25-Jun-74 38.2500 26-Jun-74 38.1500 27-Jun-74 37.8800 28-Jun-74 37.9700 1-Jul-74 38.1000 2-Jul-74 38.0200 3-Jul-74 37.9900 4-Jul-74 ND 5-Jul-74 38.0200 8-Jul-74 38.0400 9-Jul-74 38.0700 10-Jul-74 38.0700 11-Jul-74 38.0300 12-Jul-74 37.9500 15-Jul-74 37.9000 16-Jul-74 37.9000 17-Jul-74 37.8300 18-Jul-74 37.8200 19-Jul-74 37.8500 22-Jul-74 37.8100 23-Jul-74 37.6400 24-Jul-74 37.1200 25-Jul-74 37.6700 26-Jul-74 37.9000 29-Jul-74 38.0000 30-Jul-74 38.1700 31-Jul-74 38.1400 1-Aug-74 38.0600 2-Aug-74 38.0400 5-Aug-74 38.0300 6-Aug-74 38.0100 7-Aug-74 38.2200 8-Aug-74 38.4300 9-Aug-74 38.3300 12-Aug-74 38.4600 13-Aug-74 38.6800 14-Aug-74 38.7000 15-Aug-74 38.6800 16-Aug-74 38.7700 19-Aug-74 39.1500 20-Aug-74 39.0300 21-Aug-74 39.0200 22-Aug-74 39.1200 23-Aug-74 39.0800 26-Aug-74 39.1000 27-Aug-74 39.4300 28-Aug-74 39.2700 29-Aug-74 39.3500 30-Aug-74 39.3500 2-Sep-74 ND 3-Sep-74 39.3500 4-Sep-74 39.4600 5-Sep-74 39.6200 6-Sep-74 39.5600 9-Sep-74 39.5500 10-Sep-74 39.4900 11-Sep-74 39.4900 12-Sep-74 39.5300 13-Sep-74 39.4900 16-Sep-74 39.5300 17-Sep-74 39.4200 18-Sep-74 39.3500 19-Sep-74 39.4300 20-Sep-74 39.4300 23-Sep-74 39.3300 24-Sep-74 39.2800 25-Sep-74 39.3300 26-Sep-74 39.3300 27-Sep-74 39.2700 30-Sep-74 39.2900 1-Oct-74 39.1400 2-Oct-74 39.1900 3-Oct-74 39.1200 4-Oct-74 38.7500 7-Oct-74 38.7700 8-Oct-74 38.9100 9-Oct-74 38.6100 10-Oct-74 38.9000 11-Oct-74 38.8900 14-Oct-74 ND 15-Oct-74 38.6200 16-Oct-74 38.5400 17-Oct-74 38.4600 18-Oct-74 38.4400 21-Oct-74 38.5000 22-Oct-74 38.3700 23-Oct-74 38.1700 24-Oct-74 38.1200 25-Oct-74 38.1500 28-Oct-74 38.1700 29-Oct-74 38.0700 30-Oct-74 38.1700 31-Oct-74 38.1500 1-Nov-74 38.0400 4-Nov-74 38.0300 5-Nov-74 ND 6-Nov-74 38.0100 7-Nov-74 37.9800 8-Nov-74 38.1700 11-Nov-74 ND 12-Nov-74 38.2100 13-Nov-74 38.2000 14-Nov-74 37.7000 15-Nov-74 37.6900 18-Nov-74 37.2100 19-Nov-74 37.3700 20-Nov-74 37.7400 21-Nov-74 37.7900 22-Nov-74 37.5200 25-Nov-74 37.2600 26-Nov-74 37.2000 27-Nov-74 37.1900 28-Nov-74 ND 29-Nov-74 37.2600 2-Dec-74 37.4100 3-Dec-74 37.5000 4-Dec-74 37.2400 5-Dec-74 37.1700 6-Dec-74 37.2100 9-Dec-74 37.1000 10-Dec-74 37.1100 11-Dec-74 37.0100 12-Dec-74 36.8100 13-Dec-74 37.0100 16-Dec-74 36.8700 17-Dec-74 36.4400 18-Dec-74 36.6300 19-Dec-74 36.6000 20-Dec-74 36.6300 23-Dec-74 36.5000 24-Dec-74 36.5000 25-Dec-74 ND 26-Dec-74 36.7000 27-Dec-74 36.6300 30-Dec-74 36.1700 31-Dec-74 36.1100 1-Jan-75 ND 2-Jan-75 36.2800 3-Jan-75 36.0300 6-Jan-75 35.5500 7-Jan-75 35.5600 8-Jan-75 35.9100 9-Jan-75 35.7900 10-Jan-75 35.7300 13-Jan-75 35.8100 14-Jan-75 35.9500 15-Jan-75 35.8900 16-Jan-75 35.7400 17-Jan-75 35.6400 20-Jan-75 35.4400 21-Jan-75 35.2600 22-Jan-75 35.2100 23-Jan-75 35.0000 24-Jan-75 35.3500 27-Jan-75 34.6000 28-Jan-75 34.6600 29-Jan-75 35.0800 30-Jan-75 35.0900 31-Jan-75 34.9900 3-Feb-75 35.2600 4-Feb-75 35.4900 5-Feb-75 35.5100 6-Feb-75 35.3000 7-Feb-75 35.3100 10-Feb-75 34.9500 11-Feb-75 35.2700 12-Feb-75 ND 13-Feb-75 34.7900 14-Feb-75 34.9000 17-Feb-75 ND 18-Feb-75 34.6600 19-Feb-75 34.7200 20-Feb-75 34.6400 21-Feb-75 34.5100 24-Feb-75 34.3300 25-Feb-75 34.3900 26-Feb-75 34.0700 27-Feb-75 34.0100 28-Feb-75 34.0100 3-Mar-75 33.9300 4-Mar-75 34.0800 5-Mar-75 34.1400 6-Mar-75 34.1500 7-Mar-75 34.5100 10-Mar-75 34.5100 11-Mar-75 34.2800 12-Mar-75 34.4800 13-Mar-75 34.5700 14-Mar-75 34.3600 17-Mar-75 34.3500 18-Mar-75 34.2300 19-Mar-75 34.1400 20-Mar-75 34.2300 21-Mar-75 34.3300 24-Mar-75 34.2300 25-Mar-75 34.5500 26-Mar-75 34.6600 27-Mar-75 34.7200 28-Mar-75 34.7500 31-Mar-75 34.8700 1-Apr-75 34.7200 2-Apr-75 34.7000 3-Apr-75 34.8100 4-Apr-75 35.1600 7-Apr-75 35.2000 8-Apr-75 35.1600 9-Apr-75 35.1200 10-Apr-75 35.4000 11-Apr-75 35.3400 14-Apr-75 35.5200 15-Apr-75 35.3200 16-Apr-75 35.3400 17-Apr-75 35.2900 18-Apr-75 35.2700 21-Apr-75 35.2700 22-Apr-75 35.2100 23-Apr-75 34.9700 24-Apr-75 35.0200 25-Apr-75 35.2600 28-Apr-75 35.3700 29-Apr-75 35.1600 30-Apr-75 35.1800 1-May-75 35.1200 2-May-75 35.2200 5-May-75 35.0400 6-May-75 35.0400 7-May-75 34.9000 8-May-75 34.8600 9-May-75 34.9600 12-May-75 34.9700 13-May-75 34.7600 14-May-75 34.8400 15-May-75 35.0300 16-May-75 34.9700 19-May-75 34.8900 20-May-75 34.8600 21-May-75 34.7300 22-May-75 34.7200 23-May-75 34.7700 26-May-75 ND 27-May-75 34.9800 28-May-75 34.8900 29-May-75 34.9700 30-May-75 34.9700 2-Jun-75 35.0100 3-Jun-75 34.9000 4-Jun-75 34.9200 5-Jun-75 34.9200 6-Jun-75 34.9800 9-Jun-75 35.0000 10-Jun-75 34.9100 11-Jun-75 34.8900 12-Jun-75 34.8100 13-Jun-75 34.8200 16-Jun-75 34.8100 17-Jun-75 34.8100 18-Jun-75 34.8900 19-Jun-75 34.9400 20-Jun-75 34.9100 23-Jun-75 35.0200 24-Jun-75 35.0600 25-Jun-75 35.0500 26-Jun-75 35.0600 27-Jun-75 35.2000 30-Jun-75 35.3000 1-Jul-75 35.4800 2-Jul-75 35.7500 3-Jul-75 35.8000 4-Jul-75 ND 7-Jul-75 35.9800 8-Jul-75 35.8900 9-Jul-75 35.8800 10-Jul-75 36.1100 11-Jul-75 36.2000 14-Jul-75 36.5200 15-Jul-75 36.6400 16-Jul-75 36.9300 17-Jul-75 37.0000 18-Jul-75 37.1400 21-Jul-75 37.2900 22-Jul-75 37.2400 23-Jul-75 37.6100 24-Jul-75 37.6200 25-Jul-75 37.5400 28-Jul-75 37.9900 29-Jul-75 38.2000 30-Jul-75 38.3600 31-Jul-75 38.4300 1-Aug-75 38.3600 4-Aug-75 38.2000 5-Aug-75 37.9700 6-Aug-75 38.0500 7-Aug-75 38.3100 8-Aug-75 38.3100 11-Aug-75 38.3600 12-Aug-75 38.3800 13-Aug-75 38.3500 14-Aug-75 38.3100 15-Aug-75 38.3700 18-Aug-75 38.2400 19-Aug-75 38.1200 20-Aug-75 38.2000 21-Aug-75 38.2400 22-Aug-75 38.2600 25-Aug-75 38.2700 26-Aug-75 38.2800 27-Aug-75 38.3100 28-Aug-75 38.3700 29-Aug-75 38.4400 1-Sep-75 ND 2-Sep-75 38.5600 3-Sep-75 38.4600 4-Sep-75 38.5700 5-Sep-75 38.5700 8-Sep-75 38.5900 9-Sep-75 38.5800 10-Sep-75 38.6100 11-Sep-75 38.6100 12-Sep-75 38.7300 15-Sep-75 38.8100 16-Sep-75 39.2900 17-Sep-75 39.4100 18-Sep-75 39.5300 19-Sep-75 39.6700 22-Sep-75 40.0400 23-Sep-75 40.2800 24-Sep-75 39.9500 25-Sep-75 39.8700 26-Sep-75 39.9700 29-Sep-75 40.2000 30-Sep-75 39.9400 1-Oct-75 39.4500 2-Oct-75 39.4900 3-Oct-75 39.7800 6-Oct-75 39.4300 7-Oct-75 39.2300 8-Oct-75 39.3300 9-Oct-75 39.2800 10-Oct-75 38.9300 13-Oct-75 ND 14-Oct-75 39.2800 15-Oct-75 38.8200 16-Oct-75 38.6800 17-Oct-75 38.8000 20-Oct-75 38.8000 21-Oct-75 38.9400 22-Oct-75 38.5600 23-Oct-75 38.6100 24-Oct-75 38.6800 27-Oct-75 38.7000 28-Oct-75 38.7600 29-Oct-75 38.7200 30-Oct-75 38.6100 31-Oct-75 38.5200 3-Nov-75 38.5200 4-Nov-75 ND 5-Nov-75 38.8000 6-Nov-75 38.6700 7-Nov-75 38.7000 10-Nov-75 38.6900 11-Nov-75 ND 12-Nov-75 38.8300 13-Nov-75 38.9000 14-Nov-75 39.0500 17-Nov-75 39.4000 18-Nov-75 39.2400 19-Nov-75 39.2800 20-Nov-75 39.1200 21-Nov-75 39.1300 24-Nov-75 39.2000 25-Nov-75 39.1800 26-Nov-75 39.3900 27-Nov-75 ND 28-Nov-75 39.5100 1-Dec-75 39.4200 2-Dec-75 39.4000 3-Dec-75 39.4000 4-Dec-75 39.4000 5-Dec-75 39.5200 8-Dec-75 39.4900 9-Dec-75 39.5900 10-Dec-75 39.6000 11-Dec-75 39.6700 12-Dec-75 39.6000 15-Dec-75 39.7300 16-Dec-75 39.6700 17-Dec-75 39.5300 18-Dec-75 39.5000 19-Dec-75 39.4100 22-Dec-75 39.4500 23-Dec-75 39.3900 24-Dec-75 39.4200 25-Dec-75 ND 26-Dec-75 39.4100 29-Dec-75 39.5300 30-Dec-75 39.5300 31-Dec-75 39.5400 1-Jan-76 ND 2-Jan-76 39.5100 5-Jan-76 39.2500 6-Jan-76 39.2200 7-Jan-76 39.1700 8-Jan-76 39.1900 9-Jan-76 39.3100 12-Jan-76 39.2800 13-Jan-76 39.3100 14-Jan-76 39.2900 15-Jan-76 39.2800 16-Jan-76 39.3100 19-Jan-76 39.3000 20-Jan-76 39.3300 21-Jan-76 39.4200 22-Jan-76 39.3400 23-Jan-76 39.3500 26-Jan-76 39.3200 27-Jan-76 39.3400 28-Jan-76 39.2900 29-Jan-76 39.3000 30-Jan-76 39.2600 2-Feb-76 38.9700 3-Feb-76 39.1000 4-Feb-76 39.1300 5-Feb-76 39.2400 6-Feb-76 39.3000 9-Feb-76 39.2700 10-Feb-76 39.2200 11-Feb-76 39.0200 12-Feb-76 ND 13-Feb-76 39.0900 16-Feb-76 ND 17-Feb-76 39.1600 18-Feb-76 39.0500 19-Feb-76 39.0400 20-Feb-76 39.1600 23-Feb-76 39.1100 24-Feb-76 39.0900 25-Feb-76 39.1300 26-Feb-76 39.1400 27-Feb-76 39.1800 1-Mar-76 39.2500 2-Mar-76 39.3000 3-Mar-76 39.3200 4-Mar-76 39.3500 5-Mar-76 39.3900 8-Mar-76 39.3800 9-Mar-76 39.3800 10-Mar-76 39.4900 11-Mar-76 39.6800 12-Mar-76 39.6900 15-Mar-76 39.7000 16-Mar-76 39.7600 17-Mar-76 39.3700 18-Mar-76 39.1800 19-Mar-76 39.2500 22-Mar-76 38.6500 23-Mar-76 38.6100 24-Mar-76 38.7400 25-Mar-76 38.9500 26-Mar-76 39.1000 29-Mar-76 39.1000 30-Mar-76 39.0500 31-Mar-76 39.0400 1-Apr-76 38.8700 2-Apr-76 39.0500 5-Apr-76 38.9700 6-Apr-76 38.9700 7-Apr-76 39.0000 8-Apr-76 39.0000 9-Apr-76 39.0300 12-Apr-76 39.0200 13-Apr-76 38.9700 14-Apr-76 38.9100 15-Apr-76 39.0200 16-Apr-76 38.9700 19-Apr-76 38.9700 20-Apr-76 38.9900 21-Apr-76 39.0300 22-Apr-76 39.0200 23-Apr-76 39.0100 26-Apr-76 38.9400 27-Apr-76 38.9300 28-Apr-76 38.8700 29-Apr-76 38.8300 30-Apr-76 38.7900 3-May-76 38.7700 4-May-76 38.8200 5-May-76 38.8000 6-May-76 38.7900 7-May-76 38.8400 10-May-76 38.8700 11-May-76 38.9700 12-May-76 39.0700 13-May-76 39.0600 14-May-76 39.1200 17-May-76 39.4600 18-May-76 39.4300 19-May-76 39.3100 20-May-76 39.3300 21-May-76 39.4700 24-May-76 39.4200 25-May-76 39.4800 26-May-76 39.5600 27-May-76 39.5100 28-May-76 39.7800 31-May-76 ND 1-Jun-76 39.7900 2-Jun-76 39.7500 3-Jun-76 39.7600 4-Jun-76 39.7800 7-Jun-76 39.6800 8-Jun-76 39.6500 9-Jun-76 39.4400 10-Jun-76 39.5700 11-Jun-76 39.6000 14-Jun-76 39.5900 15-Jun-76 39.5700 16-Jun-76 39.5500 17-Jun-76 39.6000 18-Jun-76 39.6500 21-Jun-76 39.7100 22-Jun-76 39.6900 23-Jun-76 39.6200 24-Jun-76 39.5200 25-Jun-76 39.6400 28-Jun-76 39.7100 29-Jun-76 39.7300 30-Jun-76 39.7100 1-Jul-76 39.7200 2-Jul-76 39.7000 5-Jul-76 ND 6-Jul-76 39.6700 7-Jul-76 39.7500 8-Jul-76 39.7100 9-Jul-76 39.7700 12-Jul-76 39.7600 13-Jul-76 39.7500 14-Jul-76 39.7000 15-Jul-76 39.7400 16-Jul-76 39.8000 19-Jul-76 39.7700 20-Jul-76 39.8100 21-Jul-76 39.7900 22-Jul-76 39.7900 23-Jul-76 39.7600 26-Jul-76 39.7500 27-Jul-76 39.7600 28-Jul-76 39.6700 29-Jul-76 39.4900 30-Jul-76 39.3100 2-Aug-76 39.1800 3-Aug-76 39.2700 4-Aug-76 39.2000 5-Aug-76 39.2500 6-Aug-76 39.2700 9-Aug-76 39.2700 10-Aug-76 39.2900 11-Aug-76 39.2500 12-Aug-76 39.2900 13-Aug-76 39.1500 16-Aug-76 39.0700 17-Aug-76 38.7100 18-Aug-76 38.7000 19-Aug-76 38.8500 20-Aug-76 38.9700 23-Aug-76 38.9000 24-Aug-76 38.7000 25-Aug-76 38.7300 26-Aug-76 38.7500 27-Aug-76 38.8300 30-Aug-76 38.8100 31-Aug-76 38.8700 1-Sep-76 38.7600 2-Sep-76 38.8300 3-Sep-76 38.8500 6-Sep-76 ND 7-Sep-76 38.8100 8-Sep-76 38.8100 9-Sep-76 38.7700 10-Sep-76 38.8000 13-Sep-76 38.6400 14-Sep-76 38.5800 15-Sep-76 38.3900 16-Sep-76 38.4300 17-Sep-76 38.3300 20-Sep-76 38.2100 21-Sep-76 38.0400 22-Sep-76 37.9900 23-Sep-76 38.2400 24-Sep-76 38.2100 27-Sep-76 38.0500 28-Sep-76 38.0100 29-Sep-76 37.9500 30-Sep-76 37.6400 1-Oct-76 37.8200 4-Oct-76 37.6100 5-Oct-76 37.2300 6-Oct-76 37.2800 7-Oct-76 37.4800 8-Oct-76 37.4900 11-Oct-76 ND 12-Oct-76 37.5000 13-Oct-76 37.2700 14-Oct-76 37.3300 15-Oct-76 37.4200 18-Oct-76 37.5600 19-Oct-76 37.4500 20-Oct-76 37.1600 21-Oct-76 37.2100 22-Oct-76 37.2200 25-Oct-76 36.9700 26-Oct-76 37.0200 27-Oct-76 36.8800 28-Oct-76 36.8200 29-Oct-76 36.9700 1-Nov-76 36.9300 2-Nov-76 ND 3-Nov-76 36.9000 4-Nov-76 37.1100 5-Nov-76 37.1500 8-Nov-76 37.0700 9-Nov-76 37.2300 10-Nov-76 37.1300 11-Nov-76 ND 12-Nov-76 37.0800 15-Nov-76 37.0600 16-Nov-76 37.0900 17-Nov-76 37.1300 18-Nov-76 37.1200 19-Nov-76 37.0600 22-Nov-76 36.7800 23-Nov-76 36.6800 24-Nov-76 36.6800 25-Nov-76 ND 26-Nov-76 36.7800 29-Nov-76 36.7500 30-Nov-76 36.7600 1-Dec-76 36.7700 2-Dec-76 36.8500 3-Dec-76 36.7600 6-Dec-76 36.6100 7-Dec-76 36.6300 8-Dec-76 36.6100 9-Dec-76 36.6000 10-Dec-76 36.5900 13-Dec-76 36.6000 14-Dec-76 36.5500 15-Dec-76 36.5600 16-Dec-76 36.4000 17-Dec-76 36.4600 20-Dec-76 36.2300 21-Dec-76 36.1800 22-Dec-76 36.1300 23-Dec-76 36.2400 24-Dec-76 36.2600 27-Dec-76 36.1100 28-Dec-76 36.0000 29-Dec-76 35.9300 30-Dec-76 35.9100 31-Dec-76 35.9300 3-Jan-77 35.8100 4-Jan-77 35.7500 5-Jan-77 35.8800 6-Jan-77 35.9100 7-Jan-77 36.3200 10-Jan-77 36.7000 11-Jan-77 36.5600 12-Jan-77 36.6100 13-Jan-77 36.8100 14-Jan-77 36.9800 17-Jan-77 36.8700 18-Jan-77 36.9500 19-Jan-77 37.0400 20-Jan-77 36.9400 21-Jan-77 36.8900 24-Jan-77 36.9500 25-Jan-77 37.2700 26-Jan-77 37.2600 27-Jan-77 37.2400 28-Jan-77 37.0200 31-Jan-77 37.0400 1-Feb-77 37.0200 2-Feb-77 37.0700 3-Feb-77 37.1200 4-Feb-77 37.1400 7-Feb-77 37.0000 8-Feb-77 36.9300 9-Feb-77 37.0000 10-Feb-77 36.9700 11-Feb-77 36.8800 14-Feb-77 36.6900 15-Feb-77 36.7700 16-Feb-77 36.8100 17-Feb-77 36.8500 18-Feb-77 36.8500 21-Feb-77 ND 22-Feb-77 36.7500 23-Feb-77 36.7400 24-Feb-77 36.8200 25-Feb-77 36.7000 28-Feb-77 36.6400 1-Mar-77 36.6300 2-Mar-77 36.6600 3-Mar-77 36.6400 4-Mar-77 36.6800 7-Mar-77 36.6800 8-Mar-77 36.6800 9-Mar-77 36.7600 10-Mar-77 36.8100 11-Mar-77 36.8400 14-Mar-77 36.8000 15-Mar-77 36.7500 16-Mar-77 36.7000 17-Mar-77 36.6900 18-Mar-77 36.7000 21-Mar-77 36.6600 22-Mar-77 36.6700 23-Mar-77 36.6300 24-Mar-77 36.6500 25-Mar-77 36.6600 28-Mar-77 36.6100 29-Mar-77 36.6600 30-Mar-77 36.6300 31-Mar-77 36.6100 1-Apr-77 36.6000 4-Apr-77 36.6000 5-Apr-77 36.5800 6-Apr-77 36.5500 7-Apr-77 36.5200 8-Apr-77 36.5500 11-Apr-77 36.5600 12-Apr-77 36.4300 13-Apr-77 36.3000 14-Apr-77 36.2800 15-Apr-77 36.3800 18-Apr-77 36.2600 19-Apr-77 36.3000 20-Apr-77 36.3300 21-Apr-77 36.3100 22-Apr-77 36.3200 25-Apr-77 36.1800 26-Apr-77 36.2300 27-Apr-77 36.1200 28-Apr-77 36.0200 29-Apr-77 35.9800 2-May-77 36.0600 3-May-77 36.1400 4-May-77 35.9500 5-May-77 36.0100 6-May-77 36.0800 9-May-77 36.0900 10-May-77 36.1300 11-May-77 36.2600 12-May-77 36.2100 13-May-77 36.1600 16-May-77 36.1900 17-May-77 36.1700 18-May-77 36.1100 19-May-77 36.0500 20-May-77 36.0900 23-May-77 36.1000 24-May-77 36.0900 25-May-77 36.0400 26-May-77 36.0300 27-May-77 36.0900 30-May-77 ND 31-May-77 36.0800 1-Jun-77 36.0700 2-Jun-77 36.0300 3-Jun-77 36.0700 6-Jun-77 36.0800 7-Jun-77 36.1100 8-Jun-77 36.0800 9-Jun-77 36.0600 10-Jun-77 36.0700 13-Jun-77 36.0800 14-Jun-77 36.0600 15-Jun-77 36.0600 16-Jun-77 36.0600 17-Jun-77 36.0800 20-Jun-77 36.0900 21-Jun-77 36.1100 22-Jun-77 36.0800 23-Jun-77 36.0900 24-Jun-77 36.0900 27-Jun-77 36.1600 28-Jun-77 36.2100 29-Jun-77 36.0800 30-Jun-77 36.0700 1-Jul-77 36.0600 4-Jul-77 ND 5-Jul-77 35.9300 6-Jul-77 35.9500 7-Jul-77 35.8000 8-Jul-77 35.8100 11-Jul-77 35.6300 12-Jul-77 35.6400 13-Jul-77 35.5500 14-Jul-77 ND 15-Jul-77 35.6300 18-Jul-77 35.4500 19-Jul-77 35.3600 20-Jul-77 35.2100 21-Jul-77 35.0900 22-Jul-77 35.0800 25-Jul-77 34.9100 26-Jul-77 34.8900 27-Jul-77 35.1200 28-Jul-77 35.1400 29-Jul-77 35.3700 1-Aug-77 35.5100 2-Aug-77 35.3700 3-Aug-77 35.3700 4-Aug-77 35.4100 5-Aug-77 35.3200 8-Aug-77 35.5100 9-Aug-77 35.4500 10-Aug-77 35.5400 11-Aug-77 35.5400 12-Aug-77 35.7000 15-Aug-77 35.7100 16-Aug-77 35.8800 17-Aug-77 35.7100 18-Aug-77 35.7300 19-Aug-77 35.6500 22-Aug-77 35.5700 23-Aug-77 35.5700 24-Aug-77 35.4600 25-Aug-77 35.5700 26-Aug-77 35.6000 29-Aug-77 35.7400 30-Aug-77 35.7200 31-Aug-77 35.6500 1-Sep-77 35.6600 2-Sep-77 35.9800 5-Sep-77 ND 6-Sep-77 35.7100 7-Sep-77 35.6500 8-Sep-77 35.7400 9-Sep-77 35.8000 12-Sep-77 35.8800 13-Sep-77 35.8700 14-Sep-77 35.9300 15-Sep-77 35.8900 16-Sep-77 35.8900 19-Sep-77 35.8800 20-Sep-77 35.8400 21-Sep-77 35.8400 22-Sep-77 35.8600 23-Sep-77 35.8700 26-Sep-77 35.8400 27-Sep-77 35.8700 28-Sep-77 35.8800 29-Sep-77 35.8000 30-Sep-77 35.7100 3-Oct-77 35.5800 4-Oct-77 35.6300 5-Oct-77 35.6100 6-Oct-77 35.5300 7-Oct-77 35.5700 10-Oct-77 ND 11-Oct-77 35.6300 12-Oct-77 35.5600 13-Oct-77 35.5100 14-Oct-77 35.4200 17-Oct-77 35.3400 18-Oct-77 35.3000 19-Oct-77 35.4000 20-Oct-77 35.3700 21-Oct-77 35.3700 24-Oct-77 35.2900 25-Oct-77 35.2700 26-Oct-77 35.2700 27-Oct-77 35.3200 28-Oct-77 35.2800 31-Oct-77 35.2400 1-Nov-77 35.0600 2-Nov-77 35.1500 3-Nov-77 35.1900 4-Nov-77 35.3200 7-Nov-77 35.3900 8-Nov-77 ND 9-Nov-77 35.5000 10-Nov-77 35.4700 11-Nov-77 ND 14-Nov-77 35.2700 15-Nov-77 35.3400 16-Nov-77 35.3400 17-Nov-77 35.2900 18-Nov-77 35.3000 21-Nov-77 35.1800 22-Nov-77 35.1800 23-Nov-77 35.1400 24-Nov-77 ND 25-Nov-77 34.9700 28-Nov-77 34.9200 29-Nov-77 35.0400 30-Nov-77 35.0800 1-Dec-77 34.9200 2-Dec-77 34.7600 5-Dec-77 34.4900 6-Dec-77 34.3500 7-Dec-77 34.1500 8-Dec-77 34.3100 9-Dec-77 34.5600 12-Dec-77 34.2500 13-Dec-77 33.9300 14-Dec-77 33.6200 15-Dec-77 33.8500 16-Dec-77 33.7200 19-Dec-77 33.3100 20-Dec-77 33.2700 21-Dec-77 33.1500 22-Dec-77 33.6500 23-Dec-77 33.5100 26-Dec-77 ND 27-Dec-77 33.4400 28-Dec-77 33.0400 29-Dec-77 32.5700 30-Dec-77 32.6800 2-Jan-78 ND 3-Jan-78 32.3800 4-Jan-78 32.2100 5-Jan-78 33.5600 6-Jan-78 33.1100 9-Jan-78 33.2200 10-Jan-78 33.1200 11-Jan-78 32.7200 12-Jan-78 33.1700 13-Jan-78 32.8900 16-Jan-78 32.8800 17-Jan-78 32.9800 18-Jan-78 33.0600 19-Jan-78 33.0000 20-Jan-78 32.9400 23-Jan-78 32.7800 24-Jan-78 32.6800 25-Jan-78 32.5400 26-Jan-78 32.6300 27-Jan-78 32.8400 30-Jan-78 32.8400 31-Jan-78 32.7100 1-Feb-78 32.7300 2-Feb-78 32.7200 3-Feb-78 32.6900 6-Feb-78 32.6300 7-Feb-78 32.6500 8-Feb-78 32.7700 9-Feb-78 32.7700 10-Feb-78 32.7700 13-Feb-78 ND 14-Feb-78 32.4600 15-Feb-78 32.4900 16-Feb-78 32.2600 17-Feb-78 32.2300 20-Feb-78 ND 21-Feb-78 31.9800 22-Feb-78 31.8200 23-Feb-78 31.5100 24-Feb-78 32.0500 27-Feb-78 32.0200 28-Feb-78 31.5500 1-Mar-78 31.3500 2-Mar-78 31.4100 3-Mar-78 31.5200 6-Mar-78 31.6400 7-Mar-78 31.4200 8-Mar-78 31.5200 9-Mar-78 31.6100 10-Mar-78 32.0800 13-Mar-78 31.8000 14-Mar-78 31.8200 15-Mar-78 31.9000 16-Mar-78 31.6600 17-Mar-78 31.7700 20-Mar-78 31.7800 21-Mar-78 31.9100 22-Mar-78 31.7500 23-Mar-78 31.7500 24-Mar-78 31.7200 27-Mar-78 31.7100 28-Mar-78 31.6500 29-Mar-78 31.5700 30-Mar-78 31.5900 31-Mar-78 31.2500 3-Apr-78 31.3200 4-Apr-78 31.6500 5-Apr-78 31.4700 6-Apr-78 31.4900 7-Apr-78 31.4700 10-Apr-78 31.3500 11-Apr-78 31.3700 12-Apr-78 31.3500 13-Apr-78 31.5500 14-Apr-78 31.6500 17-Apr-78 31.7900 18-Apr-78 31.8500 19-Apr-78 31.9200 20-Apr-78 32.4500 21-Apr-78 32.4500 24-Apr-78 32.3400 25-Apr-78 32.3300 26-Apr-78 32.4100 27-Apr-78 32.1900 28-Apr-78 32.2900 1-May-78 32.2000 2-May-78 32.3600 3-May-78 32.4000 4-May-78 32.2600 5-May-78 32.3400 8-May-78 32.4900 9-May-78 32.5800 10-May-78 32.5600 11-May-78 32.7900 12-May-78 32.9600 15-May-78 33.0400 16-May-78 33.2800 17-May-78 33.3100 18-May-78 32.9100 19-May-78 33.0000 22-May-78 33.1900 23-May-78 33.2300 24-May-78 33.2200 25-May-78 33.1500 26-May-78 33.1300 29-May-78 33.0800 30-May-78 ND 31-May-78 32.7800 1-Jun-78 32.7200 2-Jun-78 32.6700 5-Jun-78 32.6600 6-Jun-78 32.7100 7-Jun-78 32.6900 8-Jun-78 32.6300 9-Jun-78 32.6600 12-Jun-78 32.6300 13-Jun-78 32.6300 14-Jun-78 32.6800 15-Jun-78 32.8900 16-Jun-78 32.8800 19-Jun-78 32.7900 20-Jun-78 32.7500 21-Jun-78 32.6100 22-Jun-78 32.8000 23-Jun-78 32.6300 26-Jun-78 32.5800 27-Jun-78 32.6300 28-Jun-78 32.6300 29-Jun-78 32.6600 30-Jun-78 32.6800 3-Jul-78 32.6400 4-Jul-78 ND 5-Jul-78 32.3000 6-Jul-78 32.5900 7-Jul-78 32.4400 10-Jul-78 32.2500 11-Jul-78 32.3300 12-Jul-78 32.4000 13-Jul-78 32.3700 14-Jul-78 32.4800 17-Jul-78 32.6200 18-Jul-78 32.5800 19-Jul-78 32.5200 20-Jul-78 32.4500 21-Jul-78 32.3600 24-Jul-78 32.1900 25-Jul-78 32.3000 26-Jul-78 32.3900 27-Jul-78 32.4400 28-Jul-78 32.2500 31-Jul-78 32.1300 1-Aug-78 32.1600 2-Aug-78 32.1400 3-Aug-78 32.0700 4-Aug-78 32.0400 7-Aug-78 31.7100 8-Aug-78 31.3500 9-Aug-78 31.3000 10-Aug-78 31.2300 11-Aug-78 31.0800 14-Aug-78 30.7700 15-Aug-78 30.6200 16-Aug-78 30.5700 17-Aug-78 31.2500 18-Aug-78 31.0800 21-Aug-78 31.4700 22-Aug-78 31.3000 23-Aug-78 31.4400 24-Aug-78 31.4000 25-Aug-78 31.6300 28-Aug-78 31.7500 29-Aug-78 31.5500 30-Aug-78 31.3700 31-Aug-78 31.3300 1-Sep-78 31.2500 4-Sep-78 ND 5-Sep-78 31.2900 6-Sep-78 31.2300 7-Sep-78 31.3200 8-Sep-78 31.5100 11-Sep-78 31.4700 12-Sep-78 31.4200 13-Sep-78 31.1800 14-Sep-78 31.2800 15-Sep-78 31.2200 18-Sep-78 31.1500 19-Sep-78 31.1300 20-Sep-78 30.9400 21-Sep-78 30.7900 22-Sep-78 30.8100 25-Sep-78 30.6000 26-Sep-78 30.7000 27-Sep-78 30.5800 28-Sep-78 30.5900 29-Sep-78 30.5800 2-Oct-78 30.5000 3-Oct-78 30.1800 4-Oct-78 29.9500 5-Oct-78 29.9200 6-Oct-78 30.0000 9-Oct-78 ND 10-Oct-78 29.8800 11-Oct-78 29.4500 12-Oct-78 29.5200 13-Oct-78 29.3400 16-Oct-78 29.3300 17-Oct-78 29.1500 18-Oct-78 28.9700 19-Oct-78 29.0100 20-Oct-78 28.6500 23-Oct-78 28.5300 24-Oct-78 28.5200 25-Oct-78 28.1400 26-Oct-78 27.7300 27-Oct-78 27.7500 30-Oct-78 27.1200 31-Oct-78 27.6200 1-Nov-78 28.8000 2-Nov-78 29.4000 3-Nov-78 29.6900 6-Nov-78 29.8600 7-Nov-78 ND 8-Nov-78 29.4300 9-Nov-78 29.5000 10-Nov-78 29.5900 13-Nov-78 29.5800 14-Nov-78 29.6000 15-Nov-78 29.6900 16-Nov-78 30.0200 17-Nov-78 30.4500 20-Nov-78 30.4700 21-Nov-78 30.2900 22-Nov-78 30.2900 23-Nov-78 ND 24-Nov-78 30.3000 27-Nov-78 30.3600 28-Nov-78 30.3600 29-Nov-78 31.0500 30-Nov-78 30.4500 1-Dec-78 30.6500 4-Dec-78 30.5300 5-Dec-78 30.3100 6-Dec-78 30.3000 7-Dec-78 30.2800 8-Dec-78 30.2500 11-Dec-78 30.0700 12-Dec-78 30.1300 13-Dec-78 30.1900 14-Dec-78 30.0500 15-Dec-78 29.9300 18-Dec-78 29.3700 19-Dec-78 29.1000 20-Dec-78 29.1000 21-Dec-78 29.4100 22-Dec-78 29.3300 25-Dec-78 ND 26-Dec-78 29.3500 27-Dec-78 28.7500 28-Dec-78 28.9100 29-Dec-78 28.8100 1-Jan-79 ND 2-Jan-79 28.7500 3-Jan-79 29.1800 4-Jan-79 29.1600 5-Jan-79 29.1300 8-Jan-79 29.0400 9-Jan-79 29.2300 10-Jan-79 29.1600 11-Jan-79 29.3300 12-Jan-79 29.2800 15-Jan-79 29.2800 16-Jan-79 29.1700 17-Jan-79 29.1200 18-Jan-79 29.0100 19-Jan-79 29.0800 22-Jan-79 29.1100 23-Jan-79 29.1700 24-Jan-79 29.1100 25-Jan-79 29.2500 26-Jan-79 29.2400 29-Jan-79 29.3100 30-Jan-79 29.3200 31-Jan-79 29.4400 1-Feb-79 29.6300 2-Feb-79 29.6900 5-Feb-79 29.3500 6-Feb-79 29.3100 7-Feb-79 29.0000 8-Feb-79 29.2300 9-Feb-79 29.1600 12-Feb-79 ND 13-Feb-79 29.3100 14-Feb-79 29.3000 15-Feb-79 29.2000 16-Feb-79 29.2300 19-Feb-79 ND 20-Feb-79 29.2600 21-Feb-79 29.2700 22-Feb-79 29.2100 23-Feb-79 29.2200 26-Feb-79 29.2000 27-Feb-79 29.2200 28-Feb-79 29.2600 1-Mar-79 29.3200 2-Mar-79 29.4100 5-Mar-79 29.4200 6-Mar-79 29.3900 7-Mar-79 29.3400 8-Mar-79 29.3400 9-Mar-79 29.3700 12-Mar-79 29.4100 13-Mar-79 29.5000 14-Mar-79 29.4000 15-Mar-79 29.4500 16-Mar-79 29.4600 19-Mar-79 29.4600 20-Mar-79 29.4800 21-Mar-79 29.4900 22-Mar-79 29.4400 23-Mar-79 29.4900 26-Mar-79 29.3700 27-Mar-79 29.4700 28-Mar-79 29.4400 29-Mar-79 29.5600 30-Mar-79 29.5900 2-Apr-79 29.7900 3-Apr-79 29.7500 4-Apr-79 29.7900 5-Apr-79 29.8500 6-Apr-79 29.9100 9-Apr-79 30.1200 10-Apr-79 30.0700 11-Apr-79 30.0300 12-Apr-79 30.1500 13-Apr-79 30.1600 16-Apr-79 30.1500 17-Apr-79 30.1800 18-Apr-79 30.1200 19-Apr-79 30.0800 20-Apr-79 30.1800 23-Apr-79 30.1500 24-Apr-79 30.1100 25-Apr-79 30.0800 26-Apr-79 30.1400 27-Apr-79 30.1300 30-Apr-79 30.2400 1-May-79 30.1800 2-May-79 30.2600 3-May-79 30.3300 4-May-79 30.3100 7-May-79 30.2600 8-May-79 30.3000 9-May-79 30.3300 10-May-79 30.4100 11-May-79 30.4000 14-May-79 30.4000 15-May-79 30.5400 16-May-79 30.4900 17-May-79 30.6200 18-May-79 30.8000 21-May-79 30.8400 22-May-79 30.8100 23-May-79 30.8400 24-May-79 30.8000 25-May-79 30.8000 28-May-79 30.8400 29-May-79 30.9100 30-May-79 ND 31-May-79 30.7000 1-Jun-79 30.8200 4-Jun-79 30.7800 5-Jun-79 30.7700 6-Jun-79 30.8000 7-Jun-79 30.7200 8-Jun-79 30.7300 11-Jun-79 30.7300 12-Jun-79 30.7500 13-Jun-79 30.6700 14-Jun-79 30.6400 15-Jun-79 30.3200 18-Jun-79 30.3700 19-Jun-79 30.0300 20-Jun-79 29.8700 21-Jun-79 29.8200 22-Jun-79 29.8000 25-Jun-79 29.5100 26-Jun-79 29.6900 27-Jun-79 29.6200 28-Jun-79 29.6500 29-Jun-79 29.5200 2-Jul-79 29.5300 3-Jul-79 29.5500 4-Jul-79 ND 5-Jul-79 29.3500 6-Jul-79 29.4300 9-Jul-79 29.5200 10-Jul-79 29.4600 11-Jul-79 29.3000 12-Jul-79 29.3000 13-Jul-79 29.3300 16-Jul-79 29.1800 17-Jul-79 28.9600 18-Jul-79 28.8200 19-Jul-79 28.8800 20-Jul-79 29.1000 23-Jul-79 28.9800 24-Jul-79 28.8900 25-Jul-79 28.9900 26-Jul-79 29.0900 27-Jul-79 29.1400 30-Jul-79 29.1900 31-Jul-79 29.3600 1-Aug-79 29.2600 2-Aug-79 29.2300 3-Aug-79 29.3100 6-Aug-79 29.2800 7-Aug-79 29.2500 8-Aug-79 29.2400 9-Aug-79 29.1800 10-Aug-79 29.1700 13-Aug-79 29.2500 14-Aug-79 29.3000 15-Aug-79 29.3300 16-Aug-79 29.2900 17-Aug-79 29.3600 20-Aug-79 29.3600 21-Aug-79 29.3600 22-Aug-79 29.3200 23-Aug-79 29.3000 24-Aug-79 29.3000 27-Aug-79 29.3300 28-Aug-79 29.3500 29-Aug-79 29.3800 30-Aug-79 29.2500 31-Aug-79 29.2900 3-Sep-79 ND 4-Sep-79 29.2600 5-Sep-79 29.2100 6-Sep-79 29.0800 7-Sep-79 29.0800 10-Sep-79 28.9900 11-Sep-79 29.0800 12-Sep-79 29.0400 13-Sep-79 29.0800 14-Sep-79 29.1300 17-Sep-79 29.0900 18-Sep-79 29.0300 19-Sep-79 29.0000 20-Sep-79 28.3900 21-Sep-79 28.4300 24-Sep-79 28.4900 25-Sep-79 28.6100 26-Sep-79 28.4600 27-Sep-79 28.2000 28-Sep-79 28.2300 1-Oct-79 28.1200 2-Oct-79 28.3600 3-Oct-79 28.3400 4-Oct-79 28.5300 5-Oct-79 28.4300 8-Oct-79 ND 9-Oct-79 29.1000 10-Oct-79 28.8000 11-Oct-79 28.9000 12-Oct-79 28.8500 15-Oct-79 28.9000 16-Oct-79 29.0100 17-Oct-79 29.0100 18-Oct-79 28.9800 19-Oct-79 28.9600 22-Oct-79 28.9900 23-Oct-79 29.0700 24-Oct-79 28.9900 25-Oct-79 28.9900 26-Oct-79 29.0500 29-Oct-79 29.2000 30-Oct-79 29.1800 31-Oct-79 29.1100 1-Nov-79 29.0000 2-Nov-79 28.8300 5-Nov-79 28.9500 6-Nov-79 ND 7-Nov-79 28.9200 8-Nov-79 29.0000 9-Nov-79 29.0300 12-Nov-79 ND 13-Nov-79 29.0400 14-Nov-79 28.9000 15-Nov-79 28.9400 16-Nov-79 28.7300 19-Nov-79 28.5600 20-Nov-79 28.6400 21-Nov-79 28.5100 22-Nov-79 ND 23-Nov-79 28.5900 26-Nov-79 28.5300 27-Nov-79 28.4900 28-Nov-79 28.4700 29-Nov-79 28.3800 30-Nov-79 28.1700 3-Dec-79 27.9100 4-Dec-79 28.1100 5-Dec-79 28.4300 6-Dec-79 28.4900 7-Dec-79 28.5200 10-Dec-79 28.5100 11-Dec-79 28.2900 12-Dec-79 28.3000 13-Dec-79 28.1800 14-Dec-79 28.3500 17-Dec-79 28.2900 18-Dec-79 28.1900 19-Dec-79 28.1300 20-Dec-79 28.2300 21-Dec-79 28.2700 24-Dec-79 28.2100 25-Dec-79 ND 26-Dec-79 28.1800 27-Dec-79 27.9500 28-Dec-79 28.0300 31-Dec-79 28.0500 1-Jan-80 ND 2-Jan-80 27.8700 3-Jan-80 27.7800 4-Jan-80 27.8900 7-Jan-80 27.7900 8-Jan-80 27.8700 9-Jan-80 27.8400 10-Jan-80 27.9000 11-Jan-80 27.9600 14-Jan-80 27.9300 15-Jan-80 28.0600 16-Jan-80 27.9500 17-Jan-80 28.0200 18-Jan-80 27.9800 21-Jan-80 28.0600 22-Jan-80 28.1700 23-Jan-80 28.1100 24-Jan-80 28.1200 25-Jan-80 28.2100 28-Jan-80 28.2000 29-Jan-80 28.2000 30-Jan-80 28.2000 31-Jan-80 28.3600 1-Feb-80 28.3400 4-Feb-80 28.3300 5-Feb-80 28.2700 6-Feb-80 28.1400 7-Feb-80 28.2500 8-Feb-80 28.2700 11-Feb-80 28.2000 12-Feb-80 ND 13-Feb-80 28.1500 14-Feb-80 28.2000 15-Feb-80 28.3100 18-Feb-80 ND 19-Feb-80 28.3800 20-Feb-80 28.3900 21-Feb-80 28.4000 22-Feb-80 28.5700 25-Feb-80 28.5900 26-Feb-80 28.6100 27-Feb-80 28.5900 28-Feb-80 28.6400 29-Feb-80 28.8400 3-Mar-80 28.9600 4-Mar-80 29.0400 5-Mar-80 29.0400 6-Mar-80 29.1400 7-Mar-80 29.1800 10-Mar-80 29.4100 11-Mar-80 29.4200 12-Mar-80 29.3700 13-Mar-80 29.5800 14-Mar-80 29.8600 17-Mar-80 30.4000 18-Mar-80 30.4800 19-Mar-80 30.2100 20-Mar-80 30.1300 21-Mar-80 30.3500 24-Mar-80 30.5000 25-Mar-80 30.5500 26-Mar-80 30.5100 27-Mar-80 30.8200 28-Mar-80 30.9500 31-Mar-80 31.2700 1-Apr-80 31.5500 2-Apr-80 31.4300 3-Apr-80 31.5200 4-Apr-80 31.6500 7-Apr-80 31.7000 8-Apr-80 31.2100 9-Apr-80 30.3600 10-Apr-80