2023 - Update 22:
The rarest of allocations this week was AX619 operating the N4. Having pulled out on the last 142, the 0755 to Belfield, it then operated light to take up a half-lap of the N4. It operated the 6th car on the N4 starting at/near Finglas around 11am and was replaced by GT130 at DCU on its return, once again showing the utility of these universals' availability in the morning. I'm not aware of another AX allocation thus far on the N4 so this was a rare one and I was delighted to catch it.