Summary statistics for scl_srvc_othr_stf_cntrct_cnt variable in pos1999 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
scl_sr~t_cnt |     94,568    .0036089    .5228285          0        160

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