Yes, you are definitely getting it! And I have to say, he is not an easy cat to "get". He did drop and his nadir was in a "normal" range. And he shouldn't be bouncing from that for pmps; it isn't as low as we usually see a bounce from. He could definitely drop more and be very safe, but he is definitely been one of our bouncier cats, so I understand your taking it slowly and carefully.
Yes, there is that frustrating ECID thing. The patterns I most often see is right after a low (like 2 hours later) or the next preshot number or the next cycle which can look flat. Lantus users say bounces can take 6 cycles to clear; I tend to think ProZinc clears sooner than that but....The two that might fit that pattern are 12/13 and 12/14. You caught a blue early but he could have dropped lower. The next daytime cycles could have been the higher flatter bounce. Maybe last night might even have been a continuation. Then today he is back to flatter lower numbers.