condition mean min max 4 h after light 179.6 179.6 179.6 8 h after light 144.2 134.4 154.0 12 h after light 186.75 150.5 223.0 4 h after dark 138.0 122.9 153.1 8 h after dark 116.69999999999999 97.2 136.2 12 h after dark 90.55 80.1 101.0