The report highlights the exceptionally bad quality of previous data.

The report highlights the exceptionally bad quality of existing data including:

That was an exceptionally bad result for the Conservatives even by the standards of the 1997 election.

But Holly was in an exceptionally bad mood, even for a fairy.

Making it easier for them to keep others out of parliament is an exceptionally bad idea.

An exceptionally bad movie star makes, I think, 10 times as much as the president.

Did the exceptionally bad weather this winter have any effect?

He is exceptionally bad in art, drama and gym.

The traffic was exceptionally bad and the bus terminated before the airport.

He is an exceptionally bad detective, missing even the most obvious clues and evidence.