Summary statistics for a_c2_4 variable in snf_rollup2540_96_2002 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      a_c2_4 |     12,637    683660.5     1293690    -782504   1.09e+08

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