Frequencies for first 10,000 rows of clmn_num variable in snf_alpha2540_96_1997

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      5,037       50.37       50.37
       0100 |      1,402       14.02       64.39
       0101 |          4        0.04       64.43
       0150 |          2        0.02       64.45
       0200 |        641        6.41       70.86
       0201 |          3        0.03       70.89
       0300 |      1,083       10.83       81.72
       0350 |          1        0.01       81.73
       0400 |        284        2.84       84.57
       0500 |        262        2.62       87.19
       0550 |          1        0.01       87.20
       0600 |        310        3.10       90.30
       0700 |        130        1.30       91.60
       0800 |        130        1.30       92.90
       0801 |         10        0.10       93.00
       0900 |        125        1.25       94.25
       0901 |          1        0.01       94.26
       1000 |        104        1.04       95.30
       1100 |         92        0.92       96.22
       1200 |        124        1.24       97.46
       1300 |        128        1.28       98.74
       1301 |          1        0.01       98.75
       1350 |         39        0.39       99.14
       1351 |          2        0.02       99.16
       1400 |         71        0.71       99.87
       1500 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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