condition mean min max 4 h after light 93.4 93.4 93.4 8 h after light 121.45 50.0 192.9 12 h after light 109.05 73.1 145.0 4 h after dark 110.2 88.5 131.9 8 h after dark 162.75 152.9 172.6 12 h after dark 148.4 116.3 180.5