A 6.20 ( I tried to resettle and dozed myself so think she might have had a 10 min nap after this point and I left hr in her cot until 7 so there was very little stimulationS 9.00-9.52
So I'd have called this A time starting at 7am given she didn't start her day until then. You did get an UT nap there, so could've maybe gone to 9:15 for naptime.
A 9.52- 11.55 (showed tired signs before nap)S 11.55-1.20
So here, a pretty good nap after 2hr A time off a short nap.
A 1.20- 3.50 (showed tired signs around 3.30 but had to leave friends house and get in car)S 3.50- 4.20
And here, an OT nap as probably expected.
A - 6.45S - 8.55- 9.28
I think given she was happy when she woke from this nap and you couldn't resettle, its unlikely to be OT.
A 9.28- 10.50S 10.50- 11.05 (car nap)A 11.05-12.40S 12.40- 1.16
So car naps can really mess with a day especially when they're in the middle of A time - if you have the flexibility, it might be good to try to go out as soon as she wakes so she either extends a short nap or can stay awake OR be ready to pop her into the car to leave at 2:15 A time and see if you can transfer her when you get home so she can continue her nap.
Everything that id read suggested that 1.5 awake time was appropriate for a almost 5 month old.
I'm not sure where you've read this - I've literally never read this anywhere and never met a baby this age who does well with it. 2.5hr may well be too long, its the higher end of the normal range and not every baby will do that. 2:15 is pretty typical though.
Also her daily total sleep has been 14 hours for the last few weeks which is apparently not enough for her age.
Not everybody will sleep the average amount, though she could certainly sleep more in the day. We tend not to remove NWs from sleep totals either, so if she was asleep or feeding for 12hr overnight, that's 12hr in the 24 already, then you just add naps on top. If you're getting total sleep requirements from the same place you're getting average awake times, they might not fit what I'm saying given I'm suggesting she be awake for significantly longer than 1.5hr at a time.
Why did yesterday work so much better?
Honestly, I think the car nap probably threw your day out. If you'd had a longer second nap after a longer A time, I think it probably would have been similar to the previous day.