Table 4. Daily mean environmental conditions recorded at the Bird Island Basin Station during events compared with mean values computed for the overall winter (November–March).
The standard deviation is indicated in parenthesis and indicates that only air and water temperatures are substantially different than their winter range during turtle hypothermic stunning events.
| Environmental Variable | N | Winter Mean (Standard Deviation) | Variable Mean During Events | Mean of Event Day Maxima | Mean of Event Day Minima | Mean of Event Daily Ranges |
|---|---|---|---|---|---|---|
| Water Level | 195 | 0.18 (0.12) | 0.16 | 0.19 | 0.13 | 0.07 |
| Wave Proxy | 188 | 0.002 (0.004) | 0.002 | 0.01 | 0.0003 | 0.006 |
| Air Temperature | 81 | 16.8 (5.1) | 11.2 | 15.2 | 8.5 | 6.7 |
| Water Temperature | 184 | 17.4 (4.5) | 11.3 | 13.2 | 10.2 | 2.9 |
| Wind Speed | 181 | 5.5 (3.0) | 5.3 | 8.6 | 2.2 | 6.4 |
| Wind Gusts | 181 | 7.0 (3.6) | 6.5 | 10.4 | 2.9 | 7.5 |
| Wind Direction | 184 | 143 (99) | 143 | 281 | 40 | 241 |
| Barometric Pressure | 130 | 1019 (7) | 1023 | 1026 | 1019 | 7 |