Summary statistics for b_1_c18_63 variable in snf_rollup2540_96_1999 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_63 | 3,824 551002.5 1860918 -418061 4.13e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018