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A comment on On whether changes in bedroom CO2 levels affect sleep quality. Parent comment

Re:On whether changes in bedroom CO2 levels affect sleep qua... by graeme on Monday January 21, 2019 @05:13PM (#18964119)
Yeah it never gets above 1300 at our place with windows closed. With a window open a crack it stays at 700-1000.

Outside is 400 globally but often 450 or more in cities. At least on my meter.

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