_RL climvstr_exfremo_slope
& climvstr_exfremo_intercept, climvstr_exfremo_slope,
I climvstr_exfremo_intercept, climvstr_exfremo_slope,
& climvstr_exfremo_intercept, climvstr_exfremo_slope
climvstr_exfremo_slope = 0.0 _d 0