Summary statistics for a_c6_06111 variable in hcris2552_96_2006 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
  a_c6_06111 |          1       -9961           .      -9961      -9961

by Jean Roth , jroth@nber.org , 10 Sep 2018