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Changelog: ‘18 World Air Quality Report

Changes below refer to updates made to the 2018 World Air Quality Report PDF and complete "World's most polluted cities" ranking hosted on the AirVisual.com website.

V1.0 - Published 5 March 2019

V1.1 - Updated 15 March 2019

- Includes recategorization of selected locations within Europe under different city groupings.

In V1.0's European ranking, Gracanica in Bosnia & Herzegovina was displayed as Europe's 3rd regional city with highest PM2.5. However this was based on incorrect geolocation, since the data used to represent Gracanica was from a station based in Tuzla, another city in Tuzla Canton. Gracanica Municipality does not currently publish air monitoring data.

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