Track times on Aust. tracks and even the same tracks from one meeting to the next can differ quite a lot depending on the field size, barrier position, race pace, surface conditions, wind strength and direction and temp. and humidity. All of these things [and probably a few others] combined in various degrees will affect times for any horse.

What I find works best for me anyway, is to average a runners times over certain distances where possible. Beyond 1400m times become pretty meaningless due to race 'pace' having more influence than any other consideration.

A lot of punters use a horse's 400/600m race sectional [where available] as a good guide.