The AirSensor DataViewer as well as the AirSensor R-Package were developed through a collaboration between the AQ-SPEC group at the South Coast Air Quality Management District (South Coast AQMD), a regional U.S. Governmental Agency in California, USA and Mazama Science, a software company in Seattle, WA. This tool is intended to support data exploration and analysis by community members participating in the US EPA funded Science To Achieve Results (STAR) Grant at the South Coast AQMD, entitled “Engage, Educate and Empower California Communities on the Use and Applications of Low-cost Air Monitoring Sensors”. A white-paper is avaliable: The AirSensor open-source R-package and DataViewer web application for interpreting community data collected by low-cost sensor networks. Funding for the development of this tool was provided through the above mentioned US EPA STAR Grant.
All data provided throughout this application (with the exception of the data displayed on the “Raw Data” tab on the Explorer page and the data shown on the “Latest Data” page) has undergone the following QA/QC procedures: (1) removal of values outside of the specifications for the sensors, as defined by the manufacturer, (2) pollutant values for Channel A and Channel B are averaged on an hourly basis, (3) if the proportion of points contributing to the hourly average meets the minimum requirement and the hourly averages are judged to be not statistically different, according to a student’s t-test, then the hourly averages for Channel A and B are averaged together – producing a single value for each hour. More detail on the procedures and functions used is available in the AirSensor R-Package documentation.
This tool is intended to be used for educational and informational purposes only. Furthermore, the code used to build this tool, the QA/QC procedures, and the different features of this tool may be subject to revision at any time depending on the needs of the project. Additionally, this work was developed under Assistance Agreement No. RD83618401 awarded by the U.S. Environmental Protection Agency to the South Coast Air Quality Management District. It has not been formally reviewed by EPA. The views expressed in this work are solely those of the authors and do not necessarily reflect those of the Agency. EPA does not endorse any products or commercial services mentioned in this work. This product is not compatible with Internet Explorer.
If you have questions or comments about the AirSensor DataViewer, please contact the AQ-SPEC group at South Coast AQMD: http://www.aqmd.gov/aq-spec/contact