Max
You are targeting the 3-4 & 5th favorite. Good tracks account for two thirds of all races. Good tracks actually favour the favorite and the second favorite. track condition other than good favour the 3-4-5 & 6th favs. It is only a slight bias less than 1% in all. 14.62% on 13.99% is a 4.5% increase for 3rd fav. 11.2% on 10.31% is an 8.63% increase for 4th fav. 5th favs results are consistent. 6th fav 6.68% on 5.66% is an 18% increase. These are the best results for slow,heavy,fast and dead tracks compared with good tracks.
I would not exclude track conditions