The SAS System SS_TOT_U DF_TOT_U 1722811 24 SS_MODEL DF_MODEL 1720451.8 3 SS_RESIDUAL DF_RESIDUAL 2359.1673 21 SS_MEAN DF_MEAN 1622920 1 SS_REGRESSION DF_REGRESSION 97531.791 2 F_OBS F_CRIT F_P 434.08698 3.4668001 0