Fig. 2
From: Seasonal and diel acoustic activity of sei whales (Balaenoptera borealis) in the New York Bight

The predicted (orange) and observed (blue) number of downsweeps per week, separated by year. Sea surface temperature (SST) is represented by the black trendline, weeks 12–14 (late March to mid-April) are shown between the vertical dashed black lines, and weeks with a mean SST between 5 and 9˚C are highlighted within the shaded blue rectangle. The y-axis on the left of the figure describes the proportion of days per week with presence (both predicted and observed), while the y-axis on the right of the figure describes the SST (˚C).