Summary statistics for a_c2_9 variable in snf_rollup2540_96_1999 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      a_c2_9 |      7,979    51611.87      110284     -91288    1957772

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