condition mean min max 4 h after light 138.0 138.0 138.0 8 h after light 134.8 72.8 196.8 12 h after light 102.9 102.8 103.0 4 h after dark 218.95 153.7 284.2 8 h after dark 292.35 220.1 364.6 12 h after dark 220.5 172.9 268.1