Summary statistics for primaryid variable in reac2013q2 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    545,256    9.99e+07    7.27e+07   3.30e+07   9.23e+08

by Jean Roth , jroth@nber.org , 6 Apr 2017