This lap was about half a second slower than my PB from the night race, but I lost 8 tenths in the first sector to my best of this session, as I was soft through T1 and had a moment at T3. 
Combined fastest sectors for this session 1:40.9!
This lap is my PB in sector 3 

- sector 3 - 27.9

This was on old tyres from Bathurst/Winton, I saved the green for the night race, I think the track was just alot faster in the morning session.