Table 2: Factors present in the stepwise-reduced model for each dataset where significant multiple linear regressions were obtained. P indicates that the factor was present in the reduced model, and + or − indicates whether there was a positive or negative relationship of the factor compared to the number of Cetaceans. Where no + or − is present, the factor was a category variable. N/A indicates that this variable was not used as an explanatory factor in the analysis.

FactorFull dataSetPresence onlyPresence only and behaviour

DateP+
BoatP
Time of day
Behaviour of cetaceanN/AN/AP
Presence of humpback whales
Presence of killer whale
Presence of white-beaked dolphin
Sea stateP−
Percentage of cloud coverP+
Weather conditions
Wind direction
Tidal conditions
Swell height
VisibilityP+P+
Sea surface temperatureP−P−
Observer