The raw data above indicates your best qualifying lap time from each track in both S15 and S16. The % Change column indicates any improvement (green if you're faster, red if you're slower than last season). A yellow cell means that there was no data so I've had to use the average improvement at that track for you. I'll add more drivers and update tracks as we go through the season. At the moment it looks like Oldschool is the most improved out of the drivers I've looked at so far and Stevo/Robert are close behind. Interestingly, Baku is the track that has seen the smallest average improvement by a long way.
Here's a look at the cumulative improvement as we've gone through the season: