Summary statistics for a_c2_1 variable in snf_rollup2540_96_1998 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- a_c2_1 | 12,423 458531.1 590495.1 -567822 2.13e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018