condition mean min max 4 h after light 9.6500825 8.914026 10.386139 8 h after light 8.8709045 8.602897 9.138912 12 h after light 10.158199 9.931048 10.38535 4 h after dark 8.929431999999998 8.719952 9.138912 8 h after dark 8.8737485 8.608585 9.138912 12 h after dark 9.538025 9.538025 9.538025