Summary statistics for a_c2_63 variable in snf_rollup2540_96_2006 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_63 | 3,621 235871.2 1243084 -5916645 2.42e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018