condition mean min max 4 h after light 179.9 179.9 179.9 8 h after light 189.35 182.5 196.2 12 h after light 274.45 255.2 293.7 4 h after dark 284.55 281.3 287.8 8 h after dark 343.15 305.2 381.1 12 h after dark 310.4 289.4 331.4