condition mean min max 4 h after light 101.5 101.5 101.5 8 h after light 80.3 69.0 91.6 12 h after light 135.65 108.0 163.3 4 h after dark 172.15 156.4 187.9 8 h after dark 176.25 126.9 225.6 12 h after dark 156.60000000000002 145.3 167.9