condition mean min max 4 h after light 206.7 206.7 206.7 8 h after light 210.25 204.5 216.0 12 h after light 306.15 231.8 380.5 4 h after dark 329.65 276.6 382.7 8 h after dark 285.7 249.0 322.4 12 h after dark 282.75 250.3 315.2