condition mean min max 2 h after light 2.37666 1.91022 2.90204 6 h after light 2.61555 1.9801 3.70248 10 h after light 3.3847183333333333 2.286 4.02545 14 h after light 2.832775 2.34568 3.47862 18 h after light 2.77822 2.05761 3.48417 2 h after dark 4.006078333333333 2.82763 4.94034