Summary statistics for a_c2_63 variable in snf_rollup2540_96_1998 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_63 | 3,009 107449.2 732159.2 -195473 2.53e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018