Split Lobe Separation Angles?

I came across a few cams the other day I've never seen. The LSA was split. As in LSA 108/116 and 108/120.

I've never seen this. Can anyone tell me what the effect this has? Or what the purpose of cutting a cam this way is?

This is one of the cams that caught my eye.
So for instance 254/[email protected], .587/.612, 108/120LSA?