condition mean min max 0 h after light 1.80762 1.70559 1.90965 4 h after light 1.30911 1.18703 1.43119 8 h after light 1.2622655 0.992601 1.53193 4 h after dark 1.975585 1.47804 2.47313 8 h after dark 2.034795 1.87742 2.19217 12 h after dark 1.9363299999999999 1.56819 2.30447