Here are the results for Week 12:
At Week 0 when I started this test, my first measurement was +0.13 seconds. Now, after 12 weeks, my measurement was +0.58. That's +0.45 seconds in 12 weeks or +0.0375 seconds/week, or +1.95 seconds/year.
The Trend projection on my graph shows <+3 seconds/year.
Either way, I'm very happy with the results so far. Will be back next week with the next installment, so stay tuned - same Bat Time, same Bat Channel ...