Summary statistics for gaz1990placedistance500miles dataset :

by Jean Roth , jroth@nber.org , 30 Mar 2016

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      place1 |          0
 mi_to_place |143,698,136    307.2705     125.691   .1291133        500
      place2 |          0
        name |          0

by Jean Roth , jroth@nber.org , 30 Mar 2016