All this statistical monitoring of pro-EU bias on Newsnight is beginning to get into the papers.
The Daily Express and the Daily Mail have both reported findings from News-watch (with a little help from ITBB).
However compelling and/or clear-cut such findings, the BBC's response is inevitable. As it says in the print version of the Mail:
A BBC spokesman said the figures did not provide a representative picture, adding; "The show provides impartial information about both sides of the argument".
In other words: We're not biased - because we say so.