Summary statistics for cola_acrdtd_y_match_dt variable in posclia2015 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- cola_acrdt~t | 6,782 2.01e+07 79175.93 1.99e+07 2.02e+07 by Jean Roth , jroth@nber.org , 26 Jan 2016