Summary statistics for gaz1990zipcodedistancemiles dataset :

by Jean Roth , jroth@nber.org , 1 Apr 2016

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     fipsst1 |          0
    zipcode1 |          0
mi_to_zipc~e |868,451,430    981.2696    674.3725   .0538119   5292.367
     fipsst2 |          0
    zipcode2 |          0
-------------+---------------------------------------------------------
        name |          0

by Jean Roth , jroth@nber.org , 1 Apr 2016