View source for Task 1: Official Air Quality

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<font size = 5; color="#f4f6f7">    Understanding Air Quality in Sofia </font>
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[[Sofia City: Data Preparation| <font color="#f4f6f7">Data Preparation</font>]]

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[[Task 1: Official Air Quality| <font color="#f4f6f7">Task 1</font>]]

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[[Task 2: Citizen Science Air Quality| <font color="#f4f6f7">Task 2</font>]]

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[[Task 3: Other Factors Affecting Air Quality| <font color="#f4f6f7">Task 3</font>]]

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<font size="4">'''Understanding Official Air Quality Data'''</font>