"John Hall" wrote in message
...

There's also the point that the CET series has been adopted as a
standard by modern climatologists, and they wouldn't have done that were
they not convinced of its validity. Some of them will have investigated
the quality of the series much more thoroughly than it's practical for
you or I to do.

I suspect its adoption by climatologists is because it is unique, not it
because it is accurate. Since it is unique we don't have anything to compare
all the values with. And where it casts up anomallies, we are relying on the
value judgements of Manley and Parker to decide whether to ignore or
incorporate them.

Cheers, Alastair.