condition mean min max 0 h after light 8.076545 7.93013 8.22296 2 h after light 3.9827199999999996 3.84665 4.11879 4 h after light 2.810675 2.26285 3.3585 8 h after light 3.0903850000000004 2.99622 3.18455 12 h after light 19.4127 19.2704 19.555 2 h after dark 27.3221 22.046 32.5982 4 h after dark 36.1255 30.7585 41.4925 8 h after dark 28.381 28.2444 28.5176 12 h after dark 14.0576 13.1664 14.9488