Frequencies for first 10,000 rows of prov6155 variable in pos2010 dataset :

       SRV: |
  AMBULANCE |
    (OWNED) |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      8,626       86.26       86.26
          0 |      1,281       12.81       99.07
          1 |         23        0.23       99.30
          2 |         66        0.66       99.96
          3 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017