Please note that I said "...seems to...", have not done enough testing over a very long period of time to say "definitely", more testing is required.
On test day, I inject at 600 am, test around 1000 am and again around 430 pm. Since this test regiman has produced some perplexing afternoon readings, the next time, I am going to test at 10, 115, and 430. Or maybe 10, 12, 2, and 4.