condition mean min max 4 h after light 5.874795000000001 5.73711 6.01248 8 h after light 2.44395 1.88017 3.00773 12 h after light 1.5802800000000001 1.43835 1.72221 4 h after dark 1.9068399999999999 1.58361 2.23007 8 h after dark 2.7399050000000003 2.71388 2.76593 12 h after dark 3.32642 3.24215 3.41069