condition mean min max 4 h after light 5.4780766666666665 5.35539 5.54255 8 h after light 5.38444 5.24005 5.49405 12 h after light 5.2804166666666665 5.05323 5.4524 4 h after dark 5.32417 5.21148 5.45556 8 h after dark 5.40498 5.2461 5.59846 12 h after dark 5.49528 5.37637 5.60232