Summary statistics for g_c1thr4_56 variable in snf_rollup2540_96_1997 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- g_c1thr4_56 | 28 3247436 4420355 -155424 1.50e+07 by Jean Roth , jroth@nber.org , 17 Feb 2018