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.
Chronic Post-Nasal Drip. Symptoms of chronic post-nasal drip involve: swelled sinus cavities that make breathing difficult, accumulation of phlegm in the back of the throat, and a severe case of halitosis resistant to mouthwashes and breath sprays.