condition mean min max 4 h after light 5.39382 5.31107 5.48759 8 h after light 5.4996366666666665 5.27693 5.83968 12 h after light 5.202366666666666 5.1349599999999995 5.31807 4 h after dark 5.25398 5.09391 5.3551400000000005 8 h after dark 5.36215 5.1845099999999995 5.48335 12 h after dark 5.37135 5.19585 5.6598