Summary statistics for aabb_acrdtd_y_match_dt variable in posclia2016 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- aabb_acrdt~t | 248 2.00e+07 68026.08 1.99e+07 2.02e+07 by Jean Roth , jroth@nber.org , 10 Jan 2017