The SAS System 1 14:49 Tuesday, March 20, 2018 The REG Procedure Model: MODEL1 Dependent Variable: Mean_Jan Number of Observations Read 369 Number of Observations Used 369 Analysis of Variance Sum of Mean Source DF Squares Square F Value Pr > F Model 3 13157 4385.71422 2605.29 <.0001 Error 365 614.43626 1.68339 Corrected Total 368 13772 Root MSE 1.29745 R-Square 0.9554 Dependent Mean 45.85799 Adj R-Sq 0.9550 Coeff Var 2.82929 Parameter Estimates Parameter Standard Variable DF Estimate Error t Value Pr > |t| Intercept 1 124.92216 6.54339 19.09 <.0001 ELEV_C 1 -0.09217 0.01435 -6.42 <.0001 LAT 1 -2.28718 0.04006 -57.09 <.0001 LONG 1 -0.06223 0.06060 -1.03 0.3052 The SAS System 2 14:49 Tuesday, March 20, 2018 The REG Procedure Model: MODEL1 Dependent Variable: Mean_Jan Number of Observations Read 369 Number of Observations Used 369 Analysis of Variance Sum of Mean Source DF Squares Square F Value Pr > F Model 2 13155 6577.68378 3906.83 <.0001 Error 366 616.21136 1.68364 Corrected Total 368 13772 Root MSE 1.29755 R-Square 0.9553 Dependent Mean 45.85799 Adj R-Sq 0.9550 Coeff Var 2.82950 Parameter Estimates Parameter Standard Variable DF Estimate Error t Value Pr > |t| Intercept 1 118.28761 1.03600 114.18 <.0001 ELEV_C 1 -0.10563 0.00583 -18.10 <.0001 LAT 1 -2.26583 0.03425 -66.16 <.0001 The SAS System 3 14:49 Tuesday, March 20, 2018 The REG Procedure Model: MODEL1 Dependent Variable: Mean_Jan Number of Observations Read 369 Number of Observations Used 369 Analysis of Variance Sum of Mean Source DF Squares Square F Value Pr > F Model 4 13204 3300.88766 2115.25 <.0001 Error 364 568.02826 1.56052 Corrected Total 368 13772 Root MSE 1.24921 R-Square 0.9588 Dependent Mean 45.85799 Adj R-Sq 0.9583 Coeff Var 2.72408 Parameter Estimates Parameter Standard Variable DF Estimate Error t Value Pr > |t| Intercept 1 118.84862 1.42143 83.61 <.0001 ELEV_C 1 -0.34980 0.07187 -4.87 <.0001 LAT 1 -2.27128 0.04760 -47.72 <.0001 ELEV_C_LAT 1 0.00529 0.00225 2.35 0.0193 ELEV_C2 1 0.00169 0.00035276 4.80 <.0001