condition mean min max 4 h after light 222.1 222.1 222.1 8 h after light 202.7 162.8 242.6 12 h after light 226.4 161.3 291.5 4 h after dark 252.9 198.7 307.1 8 h after dark 389.45 381.9 397.0 12 h after dark 369.1 274.4 463.8