condition mean min max 4 h after light 148.5 148.5 148.5 8 h after light 98.15 87.4 108.9 12 h after light 120.65 92.7 148.6 4 h after dark 241.05 209.0 273.1 8 h after dark 225.45 218.9 232.0 12 h after dark 230.25 228.2 232.3