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A comment on Analyzing Carbon Dioxide levels while attending IETF-115 in London, UK. Parent comment

Re:Analyzing Carbon Dioxide levels while attending IETF-115 ... by OJFord on Sunday November 13, 2022 @02:27AM (#33580857)
Have you tested yourself by concentrating on your breathing a bit and then guessing the level before you look at it?

I'm not disbelieving, just curious.

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