Summary statistics for a_c2_63 variable in snf_rollup2540_96_2010 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_63 | 4,295 345154.2 1613784 -1910522 3.81e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018