condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.053667 0.0 0.161001 8 h after dark 0.0 0.0 0.0 12 h after dark 0.047158 0.0 0.141474