Summary statistics for a_c6_9 variable in snf_rollup2540_96_1998 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      a_c6_9 |      2,558   -4184.711    25451.59    -570545     250398

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