options nocenter ps=65 ls=80;

data new;
 input strain nitrogen @@;
 cards;
  1 19.4 1 32.6 1 27.0 1 32.1 1 33.0
  2 17.7 2 24.8 2 27.9 2 25.2 2 24.3
  3 17.0 3 19.4 3  9.1 3 11.9 3 15.8
  4 20.7 4 21.0 4 20.5 4 18.8 4 18.6
  5 14.3 5 14.4 5 11.8 5 11.6 5 14.2
  6 17.3 6 19.4 6 19.1 6 16.9 6 20.8
 ;

proc npar1way;
 class strain;
 var nitrogen;

run;