Basically.
At the meadows #2 is the best box for ODDS 1-5 when not favourite.
12% of exactas are #1,2
#1 is also the best box for second,
#3 is the best box for third

#3,7 are numbers to be included in the trifecta.

I will try these statistics on the races tonight and see if they work.

1/2,3,7/2,3,7 is one for the trifectas if you have no idea on who to choose.
#4 is the best box to back with odds paying over $10.

Lets have a test Meadows R5
1/2,3,4,5/2,3,4,5,7