condition mean min max 4 h after light 15198.4 15198.4 15198.4 8 h after light 15775.8 14728.1 16823.5 12 h after light 15483.900000000001 14960.1 16007.7 4 h after dark 16248.85 14266.3 18231.4 8 h after dark 15855.2 14120.5 17589.9 12 h after dark 14684.5 14289.6 15079.4