condition mean min max 4 h after light 306.2 306.2 306.2 8 h after light 242.5 188.1 296.9 12 h after light 246.3 198.0 294.6 4 h after dark 320.6 269.3 371.9 8 h after dark 342.05 321.3 362.8 12 h after dark 365.9 325.8 406.0