A table is the most unambiguous format for machines, because every piece of data has an assigned row and column, so the relationship between a value and its meaning is explicit and does not need to be inferred from a sentence. This is why passages containing tables often appear in comparison answers. Use one whenever you describe parameters, prices, limits, deadlines or differences between options – text of the type the first option costs this much and the second costs that much is harder to process, even for a person. It is essential that the table be an actual table in the page's code, have a labelled header, and be readable on mobile. The worst option is a table inserted as an image: it does not exist for machines, it is unreadable for the user, and it does not update when the data changes.
See also: Comparison content for AI, Semantic triple, Numerical data and units.
