condition mean min max 4 h after light 46.4551 45.588 47.3222 8 h after light 42.6275 39.9774 45.2776 12 h after light 35.54965 35.4752 35.6241 4 h after dark 64.86425 64.5063 65.2222 8 h after dark 76.0279 75.2723 76.7835 12 h after dark 69.98945 65.8742 74.1047