Table 2.
Polynomial models for chorus start, end, duration and maximum SPL fit to time-series data excluding the night of the hurricane.
| data | fitted polynomials | r2 | mean | s.d. | predicted | observed |
|---|---|---|---|---|---|---|
| chorus start | y=0.1595x4−4.3448x3+36.002x2−96.718x+854.25 | 0.93 | 18:37:06 | 1:24:46 | 18:41:57 | 18:34:36 |
| chorus end | y=−8×10−05x4+0.0021x3−0.0179x2+0.0497x+0.037 | 0.49 | 1:39:36 | 0:37:32 | 1:03:22 | 1:24:36 |
| chorus duration | y=−0.0049x4+0.1328x3−1.103x2+2.9326x+4.8645 | 0.88 | 6 h 48 min | 1 h 29 min | 7.69 h | 7.83 h |
| max SPL dB | y=−0.0128x4+0.2799x3−1.4011x2−0.7256x+115.67 | 0.91 | 112.2 | 7.5 | 120.20 | 115.66 |
Predicted values were calculated for the night of the hurricane based on each model. SPL dB, sound pressure level in decibels. SPL re: 1 μPa Hz−0.5.