. 2022 Feb 19;12(2):e8554. doi: 10.1002/ece3.8554

TABLE 1.

Estimated effective detection area (EDA), proportional change in detection rate, and resulting scaled EDA

Diel phase	EDA ${\hat{υ}}_{d}^{* *}$ [m²]	Proportional change (relative to Day) in detection rate ${\hat{e}}_{d}$	Scaled EDA ${\hat{υ}}_{d}^{*}$ [m²]
Dawn	351 (224)	1.44 (0.18)	1280 (573)
Day	188 (76)	1 (0)	888 (398)
Dusk	1,138 (252)	1.21 (0.16)	1076 (482)
Night	4973 (2924)	2.08 (0.25)	1851 (829)
Weighted mean	1101 (494)	–	1101 (494)

Estimates are for a free‐swimming harbour porpoise in a 1‐second period from the tracking experiment. Values in brackets are standard errors. Symbols used ( ${\hat{υ}}_{d}^{* *}$ , ${\hat{e}}_{d}$ , and ${\hat{υ}}_{d}^{*})$ are defined in Equations 5 and 6, which also show how the EDAs are calculated.