Summary statistics for a_c1_12 variable in snf_rollup2540_96_2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     a_c1_12 |      1,138    42882.28    49419.54        -49     502978

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