Conversation

@bryanjclark you're not WRONG, but there's a lot of variability due to air movement, indoor vs outdoor, sensor quality, data crunching, ie: whether they're, for example, a 5 min avg, or a spot measurement...

it's one of those things where it's HARD to make those #'s match.

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@bryanjclark you consider buying a purple air?
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@bryanjclark
What's the basis for the watch meter?

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