Summary statistics for a_c1_7 variable in snf_rollup2540_96_2009 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      a_c1_7 |     12,004    172290.3    171322.2     -20013    2280998

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