Frequencies for first 10,000 rows of tot_afltd_amblnc_srvc_cnt variable in pos2016 dataset :

 Affiliated |
     Count: |
  Ambulance |
   Services |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,518       15.18       15.18
          1 |          3        0.03       15.21
          . |      8,479       84.79      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 10 Jan 2017