PROC REG Data=ozone;
    MODEL Ozone = Solar Wind Temp Day / P;
RUN;

PROC REG Data=ozone;
    MODEL Ozone = Solar Wind Temp Day / COVB;
RUN;

PROC REG Data=ozone;
    MODEL Ozone = Solar Wind Temp Day / COVB;
    MTEST -5*Wind+10*Temp;
RUN;

PROC GLM Data=ozone;
    MODEL Ozone = Solar Wind Temp Day;
    ESTIMATE '-5*Wind+10*Temp' Wind -5 Temp 10;
RUN;

DATA PredictMe;
    INPUT Ozone Solar Wind Temp Day;
    DATALINES;
. 180 15 70 274
. 180 5 90 274
RUN;

DATA ozone;
    SET ozone PredictMe;
RUN;

PROC REG;
    MODEL Ozone = Solar Wind Temp Day / P CLI CLM;
RUN;