Summary statistics for actvty_stf_othr_cntrct_cnt variable in pos1999 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
actvty_stf.. |     94,568    .0081299    .7790513          0     171.43

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