Summary statistics for cstratm variable in namcsphys2005_2010 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     cstratm |      7,449    3.08e+07     9982786   2.01e+07   4.04e+07

by Jean Roth , jroth@nber.org , 28 Mar 2016