Precision of amean and aave

[Heiner K örnich]

Hi,

I am wondering about the precision of the functions amean and aave. If I
take the data from the GrADS example (model.ctl and model.dat), I would
assume that the following expressions should be equal.

ga-> d amean(u,g)/amean(T,g)
Result value = 0.0550876
ga-> d aave(u,g)/aave(T,g)
Result value = 0.0609393

I thought, the difference between aave and amean is only the final weighting
of the sum with the area.

Do I overlook something or what is wrong here?

Cheers,
Heiner