Summary statistics for a_c2_21 variable in snf_rollup2540_96_2006 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     a_c2_21 |     10,318    13077.47    20230.31     -20437     867802

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