Bowling radar help

[Nigel Jones]

There may already be a thread for this, how does the bowling radar work..? I know the different colours for the various deliveries and half a circle means it's going wide. But what about the small gaps in the circle in various positions...?
Any help will be greatly appreciated

 

[Kunal Soni]

I was playing last night, and wondering about the answer to the same question. What does the half circle vs full vs three-fourths mean, and if it is on the left side that there is empty space, vs right side, does that mean the ball is spinning or swinging the other way?

I think I read this somewhere before, but don't remember clearly.