condition mean min max 4 h after light 55.0 55.0 55.0 8 h after light 109.1 49.0 169.2 12 h after light 256.25 123.5 389.0 4 h after dark 283.65000000000003 51.6 515.7 8 h after dark 43.75 28.9 58.6 12 h after dark 30.5 9.4 51.6