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 0.0 0.0 0.0 12 h after light 0.007873375 0.0 0.0314935 3 h after dark 0.0 0.0 0.0 6 h after dark 0.018412933333333333 0.0 0.0552388 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0