Summary statistics for a_c6_4 variable in snf_rollup2540_96_2010 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c6_4 | 13,593 -209796.3 590287 -1.92e+07 3.26e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018