condition mean min max 0 h after light 6.549785 6.35481 6.74476 2 h after light 6.727155 5.91778 7.53653 4 h after light 6.054195 5.00187 7.10652 8 h after light 7.239775 5.91579 8.56376 12 h after light 9.42331 8.62982 10.2168 2 h after dark 10.51605 10.4125 10.6196 4 h after dark 10.093 9.2047 10.9813 8 h after dark 9.954325 8.35575 11.5529 12 h after dark 9.722155 8.36151 11.0828