Summary statistics for b_1_c18_63 variable in snf_rollup2540_96_2008 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_63 | 4,541 1290696 4519085 -597783 1.08e+08 by Jean Roth , jroth@nber.org , 17 Feb 2018