@brentru In the description the PM100 value is <10.0, not 100, like the PM10 is <1.0 micron and PM25 is <2.5µm
I don't know if it's worth mentioning that these values are for upto, or less than, the value. This confuses matters because I don't know if the 4 micron value is included in the <10.0 value, which theoretically it should be for comparability with other devices that don't show <4.0 micron separately and only have a 2.5 and 10 micron value. pfff, don't worry for now apart from the first issue, and maybe adding less than or equals symbol and size unit could be good, but probably overkill

@tyeth Thanks for the review! I've updated master to reflect your feedback.