condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.093467 0.0 0.186934 12 h after light 0.645295 0.605673 0.684917 4 h after dark 0.6015355 0.40487 0.798201 8 h after dark 1.044721 0.900002 1.18944 12 h after dark 0.347118 0.1969 0.497336