condition mean min max 4 h after light 4.6728000000000005 4.5339 4.8117 8 h after light 4.44853 4.39924 4.49782 12 h after light 5.95387 5.64739 6.26035 4 h after dark 5.102595 4.8172 5.38799 8 h after dark 4.767065 4.7486 4.78553 12 h after dark 5.176295 5.12926 5.22333