Sensor network overcomes regulatory ozone problem in USA THE CUSTOMER Sonoma Technology, Inc (STI) is an advanced air quality consultancy based in California, USA. STI was contracted by the San Joaquin Valley Air Pollution Control District (SJVAPCD) to carry out a study to quantify temporal and spatial distribution of summer time ozone in and around the city of Arvin in the San Joaquin Valley. “The Aeroqual sensors mad

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