condition mean min max 4 h after light 91.2 91.2 91.2 8 h after light 74.0 56.8 91.2 12 h after light 163.75 100.0 227.5 4 h after dark 213.15 202.0 224.3 8 h after dark 172.1 137.5 206.7 12 h after dark 134.6 109.6 159.6