condition mean min max 4 h after light 2.87331 2.66805 3.07857 8 h after light 3.411565 3.12911 3.69402 12 h after light 3.114635 2.85347 3.3758 4 h after dark 5.51558 5.43635 5.59481 8 h after dark 3.581475 3.54687 3.61608 12 h after dark 3.7041500000000003 3.29234 4.11596