Turbocharger Compressor Map Explained K14

Hi,
The Turbo KKK K14, for example, is used in the T4 ACV, but also in the Audi AEL (2.5 TDI 140 hp).
The maximum boost pressure for the Audi is approximately 1.0 bar (as indicated by diagnostic data accessed with VCDS).
Would the turbo be able to withstand 1.15 bar of boost on a 2.5L TDI engine at a maximum of 4,200 rpm?
Or is it already overheating?
If that works at sea level, what would it be like in the mountains at an altitude of 3,000 meters above sea level?

Here is a diagram for the KKK K14.
Http://www.not2fast.com/turbo/maps/k14-2464.jpg

Unfortunately, I cannot interpret that.

Sure, here is the translation of the text from German to English:

"Further question:"
If you wanted to configure a new wastegate turbo yourself, there are several different paths you could take.
- The size is determined by the exhaust gas flow and the desired boost pressure.
- If you want to achieve the fastest possible boost pressure build-up, you should design a wastegate turbo to be as small as possible, right?
- What are the advantages and disadvantages of using ball bearings? (This refers to standard diesel engines, not gasoline engines or racing engines.)
- What are the advantages and disadvantages of external and internal wastegates?

Regards,
Jens.