The AAVSO Photoelectric Photometry (PEP) Program is a specific list of stars with small amplitude light changes, usually less than one magnitude. These are bright stars observable with a 6 or 8 inch telescope and photoelectric photometer.
The charts include the variable and a specific comparison and check star. There is a well defined, specific set of procedures and processes to obtaining PEP data for submission to the database. Everything is standardized, including the observation sequence.