Air pressure spreadsheet calcs

This post falls under the title of what people believe too.  It is in connection to the air pressure question, which I brought up in that post recently.  It may not lead to the conclusions I thought, but that is another post, perhaps some other day.  The point here is that there is little atmosphere at 40 miles and that the air pressure at that altitude is consistent with the air pressure component of carbon dioxide at sea level.  There are those who may dispute this, but whatever.  I don't have the time.

ppm=parts per million; ppb=parts per billion; ppt=parts per trillion