the tablebox is not actually a chart. It is only a tool that you can use to determine whether a keyfield is unique or something like it.
For displaying detail data out of a table, you can use it, but if you want to do anything more complex for a Dashboard, you should use a straight_table diagram instead.
It is definitely more work to add every field you need as a formula to the straight table (compared to a table_box), but then you can add background colours, even based on conditions, and the like.
So you should use that, with the time as your dimension.