more on floating pitch

[Mike Spalding]

John Formsma wrote:
>  I'm finding that if I have an A438 piano in the winter months, and 
> target A440, it will be more wildly out of tune in the summer months 
> than if I tune it to A439.  It's like that the bigger pitch raise 
> during the tuning makes the problem sections much worse in the higher 
> humidity times.
John,

This piano was tuned to A440 in March, and by August the A2 - A3 octave 
was 13 cents wide.  Are you saying that If I had floated the pitch at 
439 in March, that octave would not have gone as wide?

Mike