A couple of interesting maps from the studies carried out for the European Commission certainly throw up more questions than answers.
Why should the UK suffer nearly 30% winter losses in the winter of 2012/2013 when in the same winter France only recorded losses of 14.2%, Germany 13.3% but Belgium an astounding 32.4%?
From my own perspective anything around 15% could be considered normal with colonies that are not heavily manipulated.
Anyway, here are the maps and also a link to the document and other downloads.
Click on maps to enlarge.