I have my decoder ready but after analyzing the values I can see most of tiles have a negative value in header's MinimumHeight
So after interpolate each vertex's height, I get several negative values (the height value is correct, always between 0 and 32767
You can check it using this page and you'll get -321.58 as MinimumHeight
What does it mean? Is it possible to have negative height values?
And other question: what is the unit of the actual height? meters?