Proc glm lsmean cov

when i use ods to output LSmeans statement ' COV ,
Obs _NAME_ drug LSMEAN STDERR NUMBER COV1 COV2 COV3

1 PreTreatment A 10.8295 1.01054 1 1.02119 0.04497 -0.10993
2 PreTreatment D 11.0589 0.99366 2 0.04497 0.98736 -0.07611
3 PreTreatment F 10.3116 1.06877 3 -0.10993 -0.07611 1.1422
what can i get from COV 1 COV 2 COV3 i mean how can i describe them in project?