data dry;
infile 'a:drywght.dat';
input amyc $ asz $ 3-4 ich 5-6 ipt drywt 10-14 pctn 15-18 pctp pctk
      pctca pctmg / ppmmn 1-7 ppmfe 8-13 ppmal 14-18 ppmb 20-25
      ppmcu 26-31 ppmzn 32-37 ppmsr 38-43 ppmba 44-48;
proc print;
run;