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The guards that patrol the ice wall.
Entirety of NASA. Entirety of NOAA. Meteorologists. Cartographers. Everyone who works on Google Earth. Every engineer who works on satellites, rockets, and planes. Physicists.
However, I do think 10% is probably too high an estimate. While these are a lot of people in a lot of areas, they represent pretty small demographics each.
I wouldn’t recommend this if you fly very frequently, but you can take some ibuprofen or acetaminophen at the start of the flight / part way though and it should be active around the time you start getting sore.