condition mean min max 0 h after light 20.3677 17.9728 22.7626 2 h after light 9.799995 9.21419 10.3858 4 h after light 6.666525 6.33788 6.99517 8 h after light 7.92577 6.76935 9.08219 12 h after light 12.8479 11.9986 13.6972 2 h after dark 15.57245 15.3468 15.7981 4 h after dark 15.230550000000001 14.7111 15.75 8 h after dark 23.214399999999998 22.7056 23.7232 12 h after dark 21.576700000000002 20.1442 23.0092