condition mean min max 4 h after light 39.1 39.1 39.1 8 h after light 34.7 29.5 39.9 12 h after light 41.25 38.9 43.6 4 h after dark 68.3 44.6 92.0 8 h after dark 78.95 75.9 82.0 12 h after dark 78.05 46.8 109.3