O3 pollutant

Calendar plot

• Year 2019

• Year 2018

• Year 2017

• Year 2016

• Year 2015

• Year 2014

• Year 2013

• Year 2012

• Year 2011

• Year 2010

• Year 2009

• Year 2008

• Year 2007

• Year 2006

• Year 2005

• Year 2004

Time plot

Trend Level

Time Variation