condition mean min max 4 h after light 1.25945 1.02866 1.49024 8 h after light 2.30652 2.15231 2.46073 12 h after light 2.60176 2.12608 3.07744 4 h after dark 6.313935 5.28688 7.34099 8 h after dark 3.0471199999999996 2.97672 3.11752 12 h after dark 1.4040249999999999 1.27176 1.53629