condition mean min max 0 h after light 0.0436847 0.0 0.0873694 4 h after light 0.04451145 0.0 0.0890229 8 h after light 0.0432193 0.0 0.0864386 4 h after dark 0.171955 0.171616 0.172294 8 h after dark 0.04338655 0.0 0.0867731 12 h after dark 0.04267575 0.0 0.0853515