Summary statistics for gaz2016zcta5distance50miles dataset :

by Jean Roth , jroth@nber.org , 15 Jun 2017

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        zip1 |          0
        zip2 |          0
 mi_to_zcta5 |  5,853,510    31.16661    12.58319   .0492289         50

by Jean Roth , jroth@nber.org , 15 Jun 2017