Frequencies for first 10,000 rows of csa variable in sf12010880us26 dataset :

   Combined |
Statistical |
   Area7, 8 |      Freq.     Percent        Cum.
------------+-----------------------------------
        104 |        263        2.63        2.63
        138 |         86        0.86        3.49
        148 |        572        5.72        9.21
        160 |        127        1.27       10.48
        172 |          6        0.06       10.54
        180 |        117        1.17       11.71
        242 |         56        0.56       12.27
        268 |         70        0.70       12.97
        276 |         90        0.90       13.87
        278 |        132        1.32       15.19
        296 |         34        0.34       15.53
        304 |         22        0.22       15.75
        364 |         12        0.12       15.87
        408 |      1,260       12.60       28.47
        428 |        505        5.05       33.52
        430 |        450        4.50       38.02
        434 |         27        0.27       38.29
        438 |         98        0.98       39.27
        450 |          3        0.03       39.30
        464 |        167        1.67       40.97
        480 |         40        0.40       41.37
        490 |        140        1.40       42.77
        526 |         57        0.57       43.34
        532 |        138        1.38       44.72
        548 |        676        6.76       51.48
        558 |         45        0.45       51.93
        564 |         62        0.62       52.55
        566 |         28        0.28       52.83
        999 |      4,717       47.17      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017