Sheesh, super sprayer!

Some days ago I posted about two male strays who have decided that my home is a good place to be. I'll have them neutered by next month but they will remain purely outdoors. Too wild.
Anyway, one of them is Mr. Sprayer himself. He even sprays on his partner. I watched him squirt everytime anything excites him. I think he is still a kitten. The spray is not pungent (unless I'm used to the smell ) AND he is definitely not the dominant type.
So I am curious if anybody has any idea how much can a tom spray? Could the amount be more than the amount of urine in one day? Or is overspraying a health issue? He has shown no sign of illness.
Thank you.

Oh my, Yayi! What a funny little boy he is!

I can't really answer your question, but I know that one of my vising cats can spray on literally everything in my garden in just one visit!! He then continues on to spray my nextdoor neighbours fence and shed!

They certainly do seem to have a lot!