Summary statistics for a_c2_63 variable in snf_rollup2540_96_1999 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_63 | 3,226 127273.8 772318.6 -788301 2.40e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018