condition mean min max 4 h after light 324.3 324.3 324.3 8 h after light 247.9 242.4 253.4 12 h after light 261.65 244.3 279.0 4 h after dark 302.9 296.3 309.5 8 h after dark 350.4 304.7 396.1 12 h after dark 289.8 279.1 300.5