Marquee, Canopy and Awning Signs. Such signs may be painted or applied to the vertical or sloping surfaces of marquees, canopies or awnings but shall not occupy more than 10% of the total of such surfaces on any marquee, canopy or awning. Signs shall not be mounted on top, or extend above, below or beyond the end or edges of a marquee, canopy or awning. Signs may be attached to the underside of a marquee or canopy, provided the bottom edge of such a sign is not less than eight feet above the ground level below, the sign is not larger than eight feet in area each face, not more than one such sign is attached to any marquee or canopy for any one business, and the sign does not extend beyond the edges of the marquee or canopy. Marquees, canopies and awnings may be located over public sidewalks for a distance not to exceed six feet and shall be supported only by the wall to which they are attached.