Roger wrote:

The message
from Terry Fields contains these words:

I'd like to try playing with the MetO data, but two things aren't
working in my favour: a brief search of the MetO site didn't turn up
the figures - have you come across them. by any chance?;

Not as yet. As it is fine atm I am spending very little time in the
house. If the worst comes to the worst I could always extract the
figures from the graph but they would be rather imprecise.

I can think of a way that might lend some precision, but it'll be
tedious: bring up the graph in say Paint Shop Pro, hover the cursor
over each point in turn, and use the pixel-corordinate readout to give
each point a value in X,Y format. Calibrate by doing the same for each
axis. Might get the points to a precision of 1 percent - which could
be enough for our purposes.