condition mean min max 4 h after light 12.495592666666667 8.439738 16.265420000000002 8 h after light 4.854445 3.187068 5.933294999999999 12 h after light 12.58985 11.69351 13.44335 16 h after light 10.694030999999999 7.371772999999999 14.7029 4 h after dark 17.379806666666667 16.01375 18.81987 8 h after dark 15.264289999999999 10.77333 18.933329999999998