I don’t. But I do know that the 1500 blows about 20° colder than my XP 1000 did.
As an HVAC/R tech, there really is no proper way to check for proper refrigerant charge, than to recover it and weigh it. You could observe pressures while running the system and compare to ambient temp, indoor temp of the ranger, saturation temps, etc. But all in all, if your ride is blowing cold air, smile and think of others that are sweating balls.