condition mean min max 0 h after light 9.338840000000001 8.33418 10.3435 2 h after light 12.28275 11.7419 12.8236 4 h after light 10.499469999999999 9.98484 11.0141 8 h after light 11.337235 8.88827 13.7862 12 h after light 18.36285 17.2493 19.4764 2 h after dark 19.04775 17.609 20.4865 4 h after dark 11.357 9.9997 12.7143 8 h after dark 10.094349999999999 9.4353 10.7534 12 h after dark 7.881835000000001 7.15192 8.61175