Summary statistics for a_c6_7 variable in snf_rollup2540_96_1998 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      a_c6_7 |      1,646   -2079.495    25357.02    -321629     422291

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