condition mean min max 4 h after light 2.466565 2.22583 2.7073 8 h after light 2.137345 1.94777 2.32692 12 h after light 2.18648 1.6021 2.77086 4 h after dark 3.8766249999999998 3.71681 4.03644 8 h after dark 3.344475 2.98748 3.70147 12 h after dark 2.8828750000000003 2.57948 3.18627