condition mean min max 0 h after light 7.967855 7.39191 8.5438 4 h after light 5.4374 4.74846 6.12634 8 h after light 10.693695 9.09239 12.295 4 h after dark 9.937865 9.15393 10.7218 8 h after dark 10.761025 9.17955 12.3425 12 h after dark 10.167755 9.86401 10.4715