Summary statistics for b_1_c18_63 variable in snf_rollup2540_96_2002 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- b_1_c18_63 | 4,378 646262.8 2039363 -4394860 3.24e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018