Frequencies for first 10,000 rows of clmn_num variable in snf_alpha2540_96_2003

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      4,028       40.28       40.28
       0100 |      2,573       25.73       66.01
       0200 |        823        8.23       74.24
       0300 |      1,055       10.55       84.79
       0400 |        345        3.45       88.24
       0500 |        179        1.79       90.03
       0600 |        379        3.79       93.82
       0700 |         87        0.87       94.69
       0800 |         88        0.88       95.57
       0900 |         86        0.86       96.43
       1000 |         74        0.74       97.17
       1100 |         57        0.57       97.74
       1200 |         82        0.82       98.56
       1300 |         88        0.88       99.44
       1301 |          7        0.07       99.51
       1400 |         22        0.22       99.73
       1500 |         26        0.26       99.99
       1501 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Feb 2018