Summary statistics for actvty_profnl_prtm_cnt variable in pos1997 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
a~l_prtm_cnt |     89,140    .1651371    32.77822          0       9775

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