condition mean min max 0 h after light 155.0965 154.72 155.473 4 h after light 185.622 173.209 198.035 8 h after light 50.3523 49.9224 50.7822 4 h after dark 83.95214999999999 68.937 98.9673 8 h after dark 152.274 147.486 157.062 12 h after dark 176.8315 175.223 178.44