![](https://lemmy.world/pictrs/image/c6628494-1174-466c-8ed7-88cfd4fe7e2a.png)
![](https://sopuli.xyz/pictrs/image/8237c39e-cb2b-45cc-a6a1-ce36f0f09ffa.jpeg)
The numbers are close to, but not quite, what Wikipedia has. They’re using 2018 UN estimates, which includes the entire metro area, not just the city proper. I’m assuming OP is using a more recent version of this data, as it’s at least 5 years old at this point.
I think is a metrification of a measurement in imperial fluid ounces, but the imperial numbers seem arbitrary, too.
540 ml = 19.005342 Imp oz. = 18.259572 US oz.
710 ml = 24.988505 Imp oz. = 24.007956 US oz.