condition mean min max 4 h after light 183.6 183.6 183.6 8 h after light 224.65 171.8 277.5 12 h after light 323.35 317.4 329.3 4 h after dark 274.65 266.2 283.1 8 h after dark 261.95 193.9 330.0 12 h after dark 209.25 151.9 266.6