condition mean min max 4 h after light 1.3297854999999998 0.984661 1.67491 8 h after light 0.59019 0.569837 0.610543 12 h after light 1.0410504999999999 0.974331 1.10777 4 h after dark 0.8568884999999999 0.740506 0.973271 8 h after dark 1.12198 0.9145 1.32946 12 h after dark 1.045545 1.0107 1.08039