Summary statistics for a_c2_4 variable in snf_rollup2540_96_1999 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      a_c2_4 |     12,053      539884    621823.1    -966145   1.44e+07

by Jean Roth , jroth@nber.org , 17 Feb 2018