Safecast Open Radiation and Air Quality Map

If somebody assigned you to design a map that&#x27;s extremely difficult to interpret, you probably wouldn&#x27;t be clever enough to come up with this.<p><a href="https:&#x2F;&#x2F;ibb.co&#x2F;TLDxBZF" rel="nofollow">https:&#x2F;&#x2F;ibb.co&#x2F;TLDxBZF</a>

It wasn&#x27;t at all clear where the data comes from, but after a little digging it looks like volunteers are driving around with homemade devices collecting data.<p><a href="https:&#x2F;&#x2F;bgeigiezen.safecast.jp&#x2F;store-2&#x2F;" rel="nofollow">https:&#x2F;&#x2F;bgeigiezen.safecast.jp&#x2F;store-2&#x2F;</a><p>Looks like they might have had apps too, but they have been pulled from the App Store and Play Store?

Can the sensors that provide the data be trusted?<p>Or could anyone in control of the network inject fake sensor data?

<a href="https:&#x2F;&#x2F;safecast.org&#x2F;devices&#x2F;" rel="nofollow">https:&#x2F;&#x2F;safecast.org&#x2F;devices&#x2F;</a> <a href="https:&#x2F;&#x2F;safecast.org&#x2F;history-of-safecast&#x2F;" rel="nofollow">https:&#x2F;&#x2F;safecast.org&#x2F;history-of-safecast&#x2F;</a> <a href="https:&#x2F;&#x2F;safecast.org&#x2F;about&#x2F;" rel="nofollow">https:&#x2F;&#x2F;safecast.org&#x2F;about&#x2F;</a><p>It’s quite a wonderful set of globally-distributed volunteers brought together by varying passions - from hardware hacking to citizen science.<p>Whether from fixed or mobile sensors, whether from radiation or air quality sensors, all data is CC0-licensed at birth and is freely available for download.

Interesting that Three Mile Island is not any higher than background levels. I would have expected even a minor bump. I suppose 45 years is a long time.

what a misleading notation on the map. Also not clear when blue is radiation or bad air quality. Also, yellow is higher than red..