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The Positive of Negative Numbers

The Positive of Negative Numbers

You may have seen a gas concentration reported as less than zero, and that may have made the alarm bells go off. There can of course not be less than no molecules present in the air. But it doesn’t have to mean that the monitoring equipment is bad, it can just as well be valuable data. Let’s take a closer look on how that works!
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Buying AQM Equipment or AQ Data? It’s Your Choice

Buying AQM Equipment or AQ Data? It’s Your Choice

In the traditional approach to air quality monitoring, those “who wants to know” have also owned and maintained the monitoring equipment generating the answers. However, recent years’ slimmed organizations have opened up for an alternative: to buy air quality data instead of hardware. What are the pros and cons of the two approaches?
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