Frequencies for first 10,000 rows of location variable in sdued1991 dataset :

            Location |      Freq.     Percent        Cum.
---------------------+-----------------------------------
 (61.385, -152.2683) |     10,000      100.00      100.00
---------------------+-----------------------------------
               Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 20 Feb 2018