condition mean min max 0 h after light 3.177355 2.78333 3.57138 2 h after light 1.653705 1.42039 1.88702 4 h after light 1.58629 1.51573 1.65685 8 h after light 2.260085 2.0905 2.42967 12 h after light 3.889925 3.88316 3.89669 2 h after dark 4.177960000000001 4.13903 4.21689 4 h after dark 4.0559899999999995 3.51281 4.59917 8 h after dark 5.197545 5.02794 5.36715 12 h after dark 3.574515 3.54126 3.60777