Frequencies for first 10,000 rows of latitude variable in sdued1997 dataset :

   Latitude |      Freq.     Percent        Cum.
------------+-----------------------------------
     61.385 |     10,000      100.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 12 Feb 2018