condition mean min max 3 h after light 11.4394 11.3041 11.5537 6 h after light 10.68415 8.71235 12.1923 9 h after light 15.108766666666668 12.781 17.3182 12 h after light 20.44415 16.7442 23.4833 3 h after dark 25.4731 20.6278 28.4178 6 h after dark 30.90383333333333 28.2202 34.7044 9 h after dark 29.970633333333335 25.7515 33.6377 12 h after dark 28.19415 27.4874 28.9009