condition mean min max 0 h after light 1.35933 1.30923 1.40943 2 h after light 0.0 0.0 0.0 4 h after light 2.566705 0.0 5.13341 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0 4 h after dark 0.62917 0.0 1.25834 8 h after dark 0.0 0.0 0.0 12 h after dark 1.39754 0.0 2.79508