Summary statistics for scl_srvc_othr_stf_cntrct_cnt variable in pos2009 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
scl_sr~t_cnt |    122,973    .0021889    .1625314          0         48

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