Summary statistics for a_c1_4 variable in snf_rollup2540_96_2009 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      a_c1_4 |     13,953    334136.4    368326.7         40    8291000

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