Hmmm. Blue nadirs & U-curves, that is nice to see!
I would consider going up to 1.9 for both cycles, or possibly 2u at night and 1.9 in the morning. My rational being that at night you got a 40% drop, and in the day a 50% drop (based on the last 2 cycles). Ideally you want more like a 65% drop, so it looks like there is room to raise the PM dose a little more than the AM one to get a little closer to the goal. That makes sense to me too since the PM shot is a late shot, the dose loses a little oomph, while the AM one gains it as an early shot.
You are back at +10.5/+13.5? So I guess we can't blame the pink PS on the PS being at +11, darn!
I guess I'd probably try 1.8 another day or so now that you are shooting that both cycles before raising, just to see if the higher dose at night turns into better #s after another night at it. If not, then I'd think about raising a hair.