Always check your withholding with this tool if there are personal or financial changes in your life that might change your tax liability, for example new employment or a promotion changing income amount, or new family members altering the number of dependents you claim.
believe the answer you're looking for has to do with the pressure-altitude-voltage derating related to corona discharge, which increases (gets worse) with higher altitude and peaks at around 80-100,000' Typically this is considered to occur at votlages above 300 V peak, but be sure you are accounting for all transients and internal voltages.
Total Pressure Measurements E. Turbulence effects: Turbulence or flow unsteadiness may influence Pitot tube readings in two ways: A. The fluctuating velocity component influences the direction of the flow approaching the orifice (like effect of incidence). B. The fluctuating velocity components may contribute to the stagnation pressure.