condition mean min max 0 h after light 6.59313 6.45178 6.73448 4 h after light 4.93494 4.79879 5.07109 8 h after light 5.443895 5.11326 5.77453 4 h after dark 4.960285 4.87421 5.04636 8 h after dark 5.554625 5.37714 5.73211 12 h after dark 4.814970000000001 4.29368 5.33626