ok now for what was requested...

Radio tip 1 has a 23% strike rate but a 18% loss on turnover.
Radio tip 2 has a 19% strike rate but a 15% loss on turnover.
Radio tip 3 has a 14% strike rate but a 16% loss on turnover.

So the tipsters select at least 56% of the winners in the top 3.

See image below for these stats. This is over 21916 races. Notice that some races do not have tips as some venues do not get tips at all ( not very often but there are about 700 races missing tips). Also the second and third tips are not always there due to scratchings.

Attached Thumbnails