condition mean min max 4 h after light 76.7 76.7 76.7 8 h after light 114.55 86.5 142.6 12 h after light 172.75 168.2 177.3 4 h after dark 204.85 203.5 206.2 8 h after dark 196.25 177.1 215.4 12 h after dark 180.95 169.6 192.3