Summary statistics for actvty_stf_othr_cntrct_cnt variable in pos2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
actvty_stf.. |     37,813    .0157261    .3492693          0         32

by Jean Roth , jroth@nber.org , 20 Apr 2019