Summary statistics for a_c6_7 variable in snf_rollup2540_96_1997 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      a_c6_7 |      1,315   -2362.698    24710.72    -287837     452333

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