"Dawlish" wrote in message
...
On May 17, 9:59 am, "Col" wrote:


I have been following the Metcheck CET
http://www.metcheck.com/V40/UK/FREE/month.asp

I know it's not the *real* CET but the temperatures correlate
remarkably well, being just 0.1C apart. However the anolmolies
are a whole degree apart, clearly Metcheck have been using a
different (and presumably later) standard period with wich to
compare as they are on +3.1C and the real CET is +4.1C.
--
Col

Bolton, Lancashire
160m asl

HI Col,

Philip compares the current CET on the 16th, to the average CET to the
16th. metcheck don't, they compare their CET (very close to Philip's;
they use stations in the same area, but not the same stations) to the
CET for May as a whole, which, by the 31st May, on average, is higher
than it is on the 16th. Thus their anomaly is lower. I hope I've got
that right. I'm sure Philip would explain it better!


Yes that makes sense, thanks.
Both are completely valid ways of interpreting the data of course,
as long as you know just what it is the anomalies are reffering to!
--
Col

Bolton, Lancashire
160m asl