Summary statistics for snf_alpha2540_10_2011_long dataset : by Jean Roth , jroth@nber.org , 19 Apr 2018 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- rpt_rec_num | 3,432,104 1029747 15169.85 1000236 1182754 wksht_cd | 0 line_num | 0 clmn_num | 0 alphnmrc_i~t | 0 by Jean Roth , jroth@nber.org , 19 Apr 2018