Summary statistics for a_c2_21 variable in snf_rollup2540_96_2000 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     a_c2_21 |      8,460    9621.611    20597.88     -25384    1330278

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