Summary statistics for d2_1_c1_4 variable in snf_rollup2540_96_2000 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
   d2_1_c1_4 |          2          47    60.81118          4         90

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