Frequencies for first 10,000 rows of clmn_num variable in snf_alpha2540_96_1999

   clmn_num |      Freq.     Percent        Cum.
------------+-----------------------------------
       0000 |      5,352       53.52       53.52
       0100 |      1,305       13.05       66.57
       0101 |          3        0.03       66.60
       0200 |        624        6.24       72.84
       0201 |          2        0.02       72.86
       0300 |      1,090       10.90       83.76
       0301 |          1        0.01       83.77
       0400 |        239        2.39       86.16
       0500 |        252        2.52       88.68
       0501 |          1        0.01       88.69
       0600 |        279        2.79       91.48
       0700 |        122        1.22       92.70
       0800 |        122        1.22       93.92
       0801 |          4        0.04       93.96
       0900 |        117        1.17       95.13
       1000 |         87        0.87       96.00
       1100 |         47        0.47       96.47
       1200 |        115        1.15       97.62
       1300 |        119        1.19       98.81
       1301 |          1        0.01       98.82
       1350 |         65        0.65       99.47
       1351 |          2        0.02       99.49
       1352 |          1        0.01       99.50
       1400 |         42        0.42       99.92
       1500 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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