Everybody got mixed feelings

About the function and the form.

Everybody got to deviate

From the norm

    One of the fun things to do when deciding presentation is color - we aren't displaying trends or providing anything smart by just presenting numbers.  Fortunately the units resulting from all reading are consistent ( PPM ) so I didn't see a need to label with more than type.  

    Switching color when reaching a certain level - this was pretty easy with Particulate Matter ( PM ) because there are widely accepted levels for PM2.5 generally ( see Air Pollution in the World: Frequently Asked Questions ) but figuring out what is a "bad" level for some of the other measurements is well - more involved than I could figure out easily from public sources.   The colors and levels I chose for PM levels comes from the above source.  The levels chosen for CO2 where chosen arbitrarily - by me.

      When you scratch this enough - you will find that accuracy is ( or can be ) variable for many reasons, including the underlying measurement method and technology used.  One factoid I find interesting in some consumer and many commercial PM measurement devices is they include more than one particle sensor, I've seen two and 3 identical devices used in the same enclosure for some kind of redundancy or data quality ( depending on the vendor narrative ) issue.  We have just one on this platform.