Thanks for the answer mkeintz, I am an agronomist, so I have to calculate genetic gain of corn yield during 4 years. I must compare the means but I can´t use the Proc Means or Proc Glm. I am trying to use Proc Mixed to calculate the Adjusted Means by using a mixed models. Follow my sample of data: DATA GENETIC GAIN; INPUT YEAR SEASON$ LOCATION$ REP TREATMENT YIELD ; CARDS; 1989 WINTER MINNEAPOLIS 1 1 1200 1989 WINTER MINNEAPOLIS 1 2 960 1989 WINTER MINNEAPOLIS 1 3 1480 1989 WINTER MINNEAPOLIS 1 4 1240 1989 WINTER MINNEAPOLIS 1 5 1340 1989 WINTER MINNEAPOLIS 1 6 1360 1989 WINTER MINNEAPOLIS 1 7 1320 1989 WINTER MINNEAPOLIS 1 8 1380 1989 WINTER MINNEAPOLIS 1 9 1120 1989 WINTER MINNEAPOLIS 1 10 920 1989 WINTER MINNEAPOLIS 1 11 880 1989 WINTER MINNEAPOLIS 1 12 1260 1989 WINTER MINNEAPOLIS 1 13 1100 1989 WINTER MINNEAPOLIS 1 14 1340 1989 WINTER MINNEAPOLIS 1 15 1240 1989 WINTER MINNEAPOLIS 1 16 820 1989 WINTER MINNEAPOLIS 1 17 1240 1989 WINTER MINNEAPOLIS 1 18 1280 1989 WINTER MINNEAPOLIS 1 19 920 1989 WINTER MINNEAPOLIS 1 20 1280 1989 WINTER MINNEAPOLIS 2 1 1200 1989 WINTER MINNEAPOLIS 2 2 940 1989 WINTER MINNEAPOLIS 2 3 1000 1989 WINTER MINNEAPOLIS 2 4 1540 1989 WINTER MINNEAPOLIS 2 5 1400 1989 WINTER MINNEAPOLIS 2 6 1340 1989 WINTER MINNEAPOLIS 2 7 1440 1989 WINTER MINNEAPOLIS 2 8 1060 1989 WINTER MINNEAPOLIS 2 9 1000 1989 WINTER MINNEAPOLIS 2 10 900 1989 WINTER MINNEAPOLIS 2 11 960 1989 WINTER MINNEAPOLIS 2 12 1240 1989 WINTER MINNEAPOLIS 2 13 1040 1989 WINTER MINNEAPOLIS 2 14 1120 1989 WINTER MINNEAPOLIS 2 15 1100 1989 WINTER MINNEAPOLIS 2 16 1000 1989 WINTER MINNEAPOLIS 2 17 1360 1989 WINTER MINNEAPOLIS 2 18 1180 1989 WINTER MINNEAPOLIS 2 19 1120 1989 WINTER MINNEAPOLIS 2 20 1320 PROC PRINT; RUN;
... View more