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# Data
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Starting in May, 2012 we have collected 250 Mio. samples of air pollution measurements using our mobile and static deployments.
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Following data has been collected:
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| Pollutant | Sampling Rate | Time Period |
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|---|---|---|
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| Ultrafine particulate matter (UFP) | 5s | 05/2012-05/2015 |
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| Ozone (O3) | 30s | 05/2012-12/2017 |
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| Carbonmonoxide (CO) | 10s | 05/2012-12/2017 |
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| Nitrogendixode (NO2) | 10s | 05/2012-12/2017 |
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| Temperature and rel. humidity | 30s | 05/2012-12/2017 |
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![](img/misc/co.png)
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![](img/misc/pm.png)
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*Exemplary CO and ultrafine particle data traces collected by OpenSense measurement stations.*
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### Data requests
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If you would like to use our data please send us your request at osense(at)tik.ee.ethz.ch.
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Otherwise you can also download two public [test datasets(https://gitlab.ethz.ch/tec/public/opensense#test-datasets). |