condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0806705 0.0 0.161341 8 h after light 0.0404745 0.0 0.080949 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0