Summary statistics for phys_thrpst_stf_cnt variable in pos1996 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
phys_t~f_cnt |     84,663    .4329552    34.61589          0    9999.25

by Jean Roth , jroth@nber.org , 17 May 2017