Seating sections at Rose Bowl Stadium are divided into left and right portions by the aisle that runs down the middle of each section, with the H portion being on the right and L portion being on the left (as you face the field). Seats on the right side of the section start with seat number 101 (higher numbered seats), while seats on the right side start with seat 1 (lower numbered seats).

Example of H and L Sections at the Rose Bowl (Section 18 depicted above)