Summary statistics for a_c6_30 variable in snf_rollup2540_96_2002 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     a_c6_30 |      1,642    67074.25    237041.1    -724641    2074133

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