Summary statistics for a_c2_40 variable in snf_rollup2540_96_1997 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     a_c2_40 |        161    19242.55    47066.48       -650     531689

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