condition mean min max 4 h after light 6.67856 1.84556 11.8625 8 h after light 6.83936 1.60797 11.5565 12 h after light 5.9058 2.92261 8.04315 4 h after dark 6.09661 3.83112 7.4194 8 h after dark 3.4258366666666666 2.49546 5.14066 12 h after dark 4.966763333333334 3.90479 6.07996