Fig. 3

Mean predicted utility ± 1 standard error (shaded area) for a resource unit in the top model (winter conditions) as a function of temperature or frost days. A utility as a function of temperature, given high (green) or low (blue) values of snow days; B utility as a function of temperature, given high (green) or low (blue) values of snow cover depth. C, D equivalent for utility as a function of frost days. All other covariates were held at mean values to calculate predictions