condition mean min max 4 h after light 361.5 361.5 361.5 8 h after light 346.7 266.9 426.5 12 h after light 317.65 298.0 337.3 4 h after dark 281.6 276.9 286.3 8 h after dark 325.3 253.9 396.7 12 h after dark 304.9 242.9 366.9