condition mean min max 0 h after light 0.7824495 0.759397 0.805502 4 h after light 0.871353 0.773769 0.968937 8 h after light 0.4047755 0.309362 0.500189 4 h after dark 0.483979 0.263232 0.704726 8 h after dark 0.9285255 0.747911 1.10914 12 h after dark 0.6172575 0.579935 0.65458