Summary statistics for actvty_stf_othr_cntrct_cnt variable in pos2012 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
actvty_stf.. |     37,966    .0153948    .3336371          0         32

by Jean Roth , jroth@nber.org , 26 Jan 2016