condition mean min max 4 h after light 31.4 31.4 31.4 8 h after light 41.35 24.2 58.5 12 h after light 46.05 31.6 60.5 4 h after dark 48.05 29.1 67.0 8 h after dark 49.8 37.4 62.2 12 h after dark 66.85 62.3 71.4