data one;
  input count @@;
  if _N_ <= 7 then dose=0;
  if _N_ > 7 and _N_<=14 then dose=.3;
  if _N_ > 14 and _N_<=21 then dose=1;
  if _N_ > 21 and _N_<=28 then dose=3;
  if _N_ > 28 and _N_<=35 then dose=10;
  cards;
11 14 15 17 18 21 25
39 43 46 50 52 61 67
88 92 104 113 119 120 130
222 251 259 283 299 312 337
562 604 689 702 710 739 786
run;

proc print;
run;