Summary statistics for PT_ASTNT_PRTM_CNT variable in pos2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
PT_ASTNT_P~T |     37,813    .0592249    .9138914          0     114.29

by Jean Roth , jroth@nber.org , 19 Apr 2019