condition mean min max 4 h after light 145.6 145.6 145.6 8 h after light 187.55 179.3 195.8 12 h after light 170.55 124.2 216.9 4 h after dark 199.15 183.8 214.5 8 h after dark 147.0 133.3 160.7 12 h after dark 160.75 129.8 191.7