Summary statistics for primaryid variable in reac2015q4 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   primaryid |    969,028    1.29e+08    1.07e+08   3.79e+07   1.18e+09

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