condition mean min max 4 h after light 1.6197599999999999 1.40591 1.83361 8 h after light 2.39641 1.85357 2.93925 12 h after light 2.99037 2.35199 3.62875 4 h after dark 2.739675 2.59598 2.88337 8 h after dark 2.88191 2.82862 2.9352 12 h after dark 2.5207800000000002 2.20873 2.83283