When performing an applied leakage test on a fully charged system, the air leakage rate should be no more than
____ psi per minute for a single vehicle,
____ psi per minute for a combination vehicle, or 6 psi per minute for a combination of three or more vehicles (doubles and triples).
Note: An applied leakage test is performed with the service brake pedal (foot brake) pressed firmly. A static leakage test is performed without stepping on the service brake pedal (foot brake).