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A comment on Training my sense of CO2 ppm. Parent comment

Re:Training my sense of CO2 ppm by bbarnett on Saturday July 16, 2022 @07:56PM (#32123056)
As an example, close to a busy road, you may as well double the number in parent. Calibration by outside air is strange.
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Re:Training my sense of CO2 ppm by bumbledraven on Friday July 22, 2022 @10:32PM (#32199676)
Close to a busy road, sure.
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