Summary of cell-time intervals (CTIs) and whale calls at different sites.

Sites are listed from west (site 1) to east (site 5). Section (A) summarizes the number of CTIs and total number of whale calls detected at each site in the analysis dataset (i.e., after removal of CTIs with BB > 113 dB re 1 μPa). Sections (B), (C), and (D) compare the expected versus actual percentages of calls in CTIs with detected tones (B), airguns (C), and both tones and airguns (D). For example, at site 1, 7.9% of the 18,158 site 1 CTIs included tones, and 13.6% of the 894 site 1 whale calls were detected in those CTIs. Therefore, when tones were present the “excess” calls at site 1 was 13.6%– 7.9% = 5.7%. In (D), CTIs with both tones and airguns are compared to CTIs with neither tones nor airguns.