Summary statistics for hha_alpha1728_94_2009_long dataset : by Jean Roth , jroth@nber.org , 23 Aug 2018 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- rpt_rec_num | 513,866 203572 6410.542 178226 311859 wksht_cd | 0 line_num | 0 clmn_num | 0 alphnmrc_i~t | 0 by Jean Roth , jroth@nber.org , 23 Aug 2018