condition mean min max 4 h after light 1.2233115 0.903223 1.5434 8 h after light 1.56589 1.50188 1.6299 12 h after light 1.078098 0.863536 1.29266 4 h after dark 1.4045766666666666 1.07338 1.82754 8 h after dark 0.8378213333333333 0.283924 1.22894 12 h after dark 0.534671 0.361674 0.734302