[JT118]

Just been checking all our readings for CO2:

https://thingspeak.com/channels/328043

https://thingspeak.com/channels/317451

https://thingspeak.com/channels/327199

https://thingspeak.com/channels/333695

https://thingspeak.com/channels/328383

it seems 327199 is the most consistent and realisitic CO2 reading. Of course there are things that can alter this fairly substantially; inside, outside, If inside how many people in the house, if outside is it near a busy road, a gas boiler, a bushfire, is it winter lots of gas boilers running, is it summer CO2 absorbed by growing plants, etc. Nonetheless I would expect that generally CO2 should run in the low 400's, occasionally rising but not much above 450ppm. It seems all of us are outputting figures substantially above that.


I assume we are all using the MH-Z19 as below.

http://www.ebay.co.uk/itm/1Pcs-Mh-Z19-0-...1826725122

What is 327199 doing correctly?

See here for some Australian (Tasmania) Graphs.

https://www.theguardian.com/environment/...-no-return