condition mean min max 4 h after light 8714.9 8714.9 8714.9 8 h after light 6765.75 6272.4 7259.1 12 h after light 6745.35 5755.1 7735.6 4 h after dark 4924.2 2730.6 7117.8 8 h after dark 5641.1 2886.6 8395.6 12 h after dark 9959.25 7800.0 12118.5