condition mean min max 4 h after light 9.053260000000002 8.97957 9.12695 8 h after light 7.81865 7.40177 8.23553 12 h after light 8.208200000000001 7.871 8.5454 4 h after dark 9.78686 8.72802 10.8457 8 h after dark 8.257285 8.0748 8.43977 12 h after dark 9.901140000000002 9.59368 10.2086