condition mean min max 4 h after light 4.238849999999999 4.02129 4.45641 8 h after light 3.4708699999999997 3.35194 3.5898 12 h after light 3.3004350000000002 2.84056 3.76031 4 h after dark 5.51412 5.17517 5.79503 8 h after dark 6.110846666666666 5.11653 7.85109 12 h after dark 5.06506 4.49855 5.66835