condition mean min max 4 h after light 179.691 155.181 204.201 8 h after light 135.1285 129.005 141.252 12 h after light 140.1495 121.912 158.387 4 h after dark 77.8247 76.3726 79.1083 8 h after dark 171.708 156.974 186.74 12 h after dark 179.092 167.438 190.729