Summary statistics for a_c1_9 variable in snf_rollup2540_96_2003 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c1_9 | 11,141 189367.1 331375.6 -68552 1.55e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018