Summary statistics for mfr_dt variable in demo2017q4 dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      mfr_dt |    312,018    2.02e+07    8950.546   1.99e+07   2.02e+07

by Jean Roth , jroth@nber.org , 19 Jun 2018