Summary statistics for a_c6_21 variable in snf_rollup2540_96_2002 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     a_c6_21 |        745    2699.596    49707.77    -170000    1304489

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