Summary statistics for a_c2_63 variable in snf_rollup2540_96_2004 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_63 | 3,521 188528.9 1016517 -5127412 2.11e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018