condition mean min max 4 h after light 0.0687985 0.0 0.137597 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.02981825 0.0 0.0596365 12 h after dark 0.0 0.0 0.0