Haul-out probability as a function of predictor variables.

Odds ratios are the relative odds of a seal being hauled out for one value of the covariates vs. another value [47]. Marginal means (i.e., SAS least-squares means; [41]) are the estimated probability of a seal being hauled out for each level of the predictor variable, adjusted for other predictors in the model. Analyses with respect to ice, vessels, cloud cover, precip, and sky, were based on data from 2009–2010 and only for the daylight hours >0500 to <2200.
1Models containing these predictors omitted the season*sex interaction to facilitate convergence; these factors (i.e., ice, precipitation, sky condition, and cloud cover) were included in models singly, rather than simultaneously.
2Results for binary vessel predictors (i.e., absence/presence); results for the binary vessel variables are easier to interpret, however models using continuous vessel predictors showed similar patterns.
Haul-out probability as a function of predictor variables.