Summary statistics for a_c6_9 variable in snf_rollup2540_96_2002 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      a_c6_9 |      2,334    2642.734    30014.72    -365957     297223

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