data flicker;
input Color $ Flicker;
datalines;
Brown	26.8
Brown	27.9
Brown	23.7
Brown	25
Brown	26.3
Brown	24.8
Brown	25.7
Brown	24.5
Green	26.4
Green	24.2
Green	28
Green	26.9
Green	29.1
Blue	25.7
Blue	27.2
Blue	29.9
Blue	28.5
Blue	29.4
Blue	28.3
;
run;


PROC ANOVA DATA=flicker;
CLASS Color;
MODEL Flicker = Color;
RUN;


PROC ANOVA DATA=flicker;
CLASS Color;
MODEL Flicker = Color;
MEANS Color / Tukey;
RUN;

PROC GLM DATA=flicker;
  CLASS Color;
  MODEL Flicker = Color;
  LSMEANS Color / PDIFF ADJUST = T;
RUN;