The numbered spaces for buildings shall increase in the direction of increased tiers. Proceeding along a street in this direction, the odd numbers shall be on the right beginning with "1" added to the tier number, and the even numbers shall be on the left added in like manner; for example the first space of twelve and one-half feet (121/2') on the left of G Street from the corner of G and 10th Streets going southeasterly on G Street, shall be numbered 1000 and so on, and the like space on the right shall be numbered 1001 and so on. (Ord. 377, 5-4-1965)