condition mean min max 4 h after light 1.577875 1.52036 1.63539 8 h after light 1.924915 1.74962 2.10021 12 h after light 2.056675 1.82257 2.29078 4 h after dark 4.151393333333333 3.96924 4.47239 8 h after dark 2.59661 2.35456 2.84116 12 h after dark 3.7851000000000004 2.96044 4.75722