KAD 43 - Power problem

I’m studying this data and noticed that the ambient temperature effects the boost pressure.. right now temperature is around 36degrees celcius. Will this effect my readings compred to the date sheet shown above?
If I’m reading the chart correctly then the 1.5bar (150KPa) at 35*C comes out just above 1.6bar (160KPa) at 20*C
but it’s the 0.9 bar on the other engine that concerns me.
 
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