DUST PM2.5 PM10 good value for health

[seb835]

Hi ,

Reading some article on web, i see that s better to keep a CO2 value under 1500 ppm  in the House.
But what about DUST  PM2.5 PM10 ,   what is the range measure by the CUBIC PM 2005 ? and what are the healthy value ?

Right now, my sensors says :

TEMP : 19.98
TEMPR : 19.98
HUM : 56
PM25 : 2
PM10 : 2
CO2 : 1299
CO2R : 1295

What is CO2R Value ?

Thanks for making me less idiot ;-)