condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.058781 0.0 0.176343 12 h after light 0.0901055 0.0 0.360422 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.12258233333333333 0.0 0.203551 12 h after dark 0.307515 0.172345 0.442685