condition mean min max 0 h after light 12.87835 11.5705 14.1862 4 h after light 7.9775100000000005 6.98094 8.97408 8 h after light 1.7357 1.53769 1.93371 4 h after dark 6.297235 1.52647 11.068 8 h after dark 13.5803 13.0963 14.0643 12 h after dark 16.80155 16.7018 16.9013