It is required to have some design in a table to make sure that the table is accessible. This means, a table must have either a header row or a first column.
When the table is well marked up, the tags will be recognized in the PDF.
This table has no Header Row nor First Column. This can be solved by adding one or both of these. If none of these options make sense, please consider if a simple text box could achieve same effect as a table.