Frequencies for first 10,000 rows of temptake variable in namcs2005 dataset :

temperature |
      taken |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,899       48.99       48.99
          1 |      5,101       51.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016