Frequencies for first 10,000 rows of londeg variable in nsrd dataset :

  Longitude |
     Degree |
    Portion |      Freq.     Percent        Cum.
------------+-----------------------------------
         13 |        260        2.60        2.60
         14 |      4,020       40.20       42.80
         15 |      2,860       28.60       71.40
         16 |      2,600       26.00       97.40
         17 |        260        2.60      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Jun 2016