I have just noticed (as a result of another enquiry) that I accidently copied the figures for Blue Tit in the table for Great Tit! The correct figures should be as follows:
2006 - 4.93 y 48 pairs
2005 - 4.76 y 52 pairs
2004 - 5.09 y 53 pairs
2003 - 4.6 y 55 pairs
2002 - 5.81y 75 pairs
2000 - 6.5 y 74 pairs
1999 - 5.52 y 91 pairs
1998 - 6.25 y 83 pairs
Sorry about that.