Dear Jonathan,

----- "Jonathan Gregory" <j.m.greg...@reading.ac.uk> wrote:
> Dear Thomas
> 
> I'm not saying the coordinate *must* be the mid-point. If there's a
> good reason
> for it being something else, then you could choose it to be so. I was
> suggesting that we could recommend it should be the mid-point if there
> is
> no strong basis for making another choice. We could also say that it
> must not
> be outside the bounds.

I agree with your recommendation. 

But I was also trying to gain support on "which axis value should I choose for 
my variable" and your answer does not help :-). 

I have rather little basis for making the choice of the end time for 
representing an accumulated quantity but, at least, CF does not forbid it. I 
guess I have to seek agreement inside my scientific community and that it is 
not CF's role to decide upon that. 

Are there people interested in taking the discussion further? We seek the 
answer to the question: "In which cases would another choice (other than 
mid-point) be relevant?".

Thomas


> 
> You are right, it cannot be missing data. That would break some
> applications,
> anyway.
> 
> Cheers
> 
> Jonathan
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