Had a few weeks off the bike and my signature reasonably dropped. Had a decent ride back with a silver BT which put me about where I thought I should be, 880W / 22kj / 235W.
Did some punchy laps the next day, several BT efforts which were above MPA. It gave me a bronze BT (Up to 897, down to 21 kJ, down to 234W), however today my signature is showing as 921W / 22 kj / 237W.
If I had a BT AND increased all aspects of my signature, why did two elements decrease in the BT, only to subsequently increase? And why only a bronze BT?
EDIT: I went back and changed my decay from Low to Optimal and refreshed the first ride - this re-calculated the punchy laps as a silver BT with more sensible numbers.
When you have a BT you actually have three sets of signature changes in one day.
One is the BT changes of up or down or stable on all three values, that’s what the BT report shows, new values are calculated based on your BT effort.
The second one is the change that comes from TL changes in the three systems, up or stable, mostly up with a BT ride usually. You accumulated some XSS in Low, High and Peak and that adds something to your signature values. Those occur with every activity.
The third is decay from one day to the next, depending on settings down every day or stable when TL is stable (TL matched).