condition mean min max 0 h after light 5.105085 3.98378 6.22639 2 h after light 3.065495 2.83573 3.29526 4 h after light 6.61689 6.2668 6.96698 8 h after light 16.41035 15.2893 17.5314 12 h after light 4.655635 4.48364 4.82763 2 h after dark 2.94654 2.53988 3.3532 4 h after dark 4.202455 3.95194 4.45297 8 h after dark 4.240355 3.7659 4.71481 12 h after dark 5.02993 4.4518 5.60806