Seasonally adjusted flow from BEA, NIPA, Table 3.3, line 17, Federal grants-in-aid. Unadjusted flow from BEA, NIPA, Table 3.23, line 9, Federal grants-in-aid. Seasonal factors are calculated as the seasonally adjusted flow at an annual rate, divided by four, less the unadjusted quarterly flow. Series has no levels.