condition mean min max 3 h after light 6.60813 5.50173 8.31381 6 h after light 5.089583333333334 4.49858 5.98786 9 h after light 5.092063333333333 4.54777 5.52379 12 h after light 10.13287 6.30337 20.0352 3 h after dark 17.4122 15.453 20.169 6 h after dark 15.7537 14.326 17.3931 9 h after dark 20.573133333333335 17.8668 22.2667 12 h after dark 20.4921 20.369 20.6152