condition mean min max 4 h after light 323.8 323.8 323.8 8 h after light 316.0 259.2 372.8 12 h after light 361.9 306.6 417.2 4 h after dark 246.2 243.4 249.0 8 h after dark 296.1 186.6 405.6 12 h after dark 235.45 192.6 278.3