The origin dataset (Phildelphia buildings) has the tags 'approx_hgt' and 'max_hgt'. When ESRI prepared the data for MapWithAI (which is where I'm adding from), they seem to have used 'max_hgt' converted from feet to meters.

This building is a little roof in the back yard (like a picnic shelter). It's tagged as 'approx_hgt'=10 (feet), and 'max_hgt'=58.1, so I don't know what's going on there.

I'll just remove the height tag.