Summary statistics for ashi_acrdtd_y_match_dt variable in posclia2017 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- ashi_acrdt~t | 123 2.00e+07 72106.82 1.99e+07 2.02e+07 by Jean Roth , jroth@nber.org , 9 Jan 2018