Summary statistics for b_1_c18_63 variable in snf_rollup2540_96_2006 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_63 | 4,363 1009499 3419989 -5916645 7.73e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018