Overview of the four models assessed for each of the 62 bear-years.

For covariates with a quadratic term included, the linear term was also included. The AIC Tally is a record of the model that had the lowest Akaike Information Criterion score for each bear-year.对于纳入二次项的协变量（covariates），其线性项亦需同步纳入模型。AIC计数表（AIC Tally）记录了各熊个体-年度单元下赤池信息准则（Akaike Information Criterion，AIC）得分最低的模型。