FIG. 1 is a front elevational view of a side panel for a portable toilet structure showing my new design the rear of the side panel for a portable toilet structure is essentially the same as the front;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a perspective view thereof.