Summary statistics for a_c1_4 variable in snf_rollup2540_96_2011 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      a_c1_4 |      1,804    257804.4    253167.3       3434    3178619

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