Summary statistics for aabb_acrdtd_y_match_dt variable in posclia2014 dataset : Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- aabb_acrdt~t | 259 2.00e+07 64727.43 1.99e+07 2.01e+07 by Jean Roth , jroth@nber.org , 26 Jan 2016