condition mean min max 4 h after light 178.7 178.7 178.7 8 h after light 185.85 173.1 198.6 12 h after light 223.95 213.8 234.1 4 h after dark 211.25 143.1 279.4 8 h after dark 232.15 115.8 348.5 12 h after dark 202.45 176.9 228.0