=+researchers propose a generalized water yield model for watersheds. One important watershedspecific component of the model is , a coefficient characterizing the watershed’s annual water yield response to annual precipitation. The article provided the following data from 16 California coastal watersheds for  (in m21

) and average long-term annual temperature (T in °C):

T: 8.51 8.69 9.01 9.50 10.00 10.60 11.00 11.60

: .40 .42 .40 .43 .40 .38 .40 .30 T: 11.60 12.60 12.60 13.60 14.20 15.30 17.90 17.90

: .41 .27 .28 .19 .22 .19 .13 .09