Summary statistics for b_1_c18_19 variable in snf_rollup2540_96_2006 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_19 | 1,359 1692098 2545770 -1630 2.42e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018