condition mean min max 0 h after light 9.468779999999999 9.25888 9.67868 4 h after light 5.984495 5.4574 6.51159 8 h after light 5.019685 4.71249 5.32688 4 h after dark 6.1177 4.99148 7.24392 8 h after dark 7.4645399999999995 7.34656 7.58252 12 h after dark 8.760135 7.5703 9.94997