Summary statistics for mdcl_drctr_cntrct_cnt variable in pos2009 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
mdcl_d~t_cnt |    122,973    .0456495    4.057404          0     999.99

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