Measures particulate matter in micrograms per cubic meter. Recommended exposure limits range from 5-15 mcg/m^3

Based on:

• http://wiki.seeed.cc/Grove-Dust_Sensor/

References:

• https://www.osha.gov/dts/chemicalsampling/data/CH_259640.html
• https://www.osha.gov/dsg/annotated-pels/tablez-1.html

Test readings:

• 7/28/15
• 5/5/17