condition mean min max 0 h after light 7.741 7.59637 7.88563 2 h after light 14.99495 10.9652 19.0247 4 h after light 17.3213 17.0909 17.5517 8 h after light 16.77735 15.9703 17.5844 12 h after light 19.28585 16.8938 21.6779 2 h after dark 20.8654 18.8277 22.9031 4 h after dark 11.739460000000001 8.86562 14.6133 8 h after dark 17.98265 17.6564 18.3089 12 h after dark 10.7941 10.5835 11.0047