> On Jul 27, 2017, at 3:59 PM, Lubomir I. Ivanov <[email protected]> wrote:
> 
> it seems to commonly happen near the 2 higher zoom levels (18,19):
> - minimum is 1.7 (whole globe visible)
> - maximum is 19
> 
> so maybe a maximum zoom clamp of 17 is a good idea, but this way the
> 18,19 levels will be lost for locations that actually have them.

But we cannot programmatically tell if we are getting map data or the invalid 
tiles back?

/D
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