ISSS608 2018-19 T1 Assign Zhang Yanli Task2

Spatio-temporal patterns of air quality in Sofia City

Background

Task1

Task2

Task3

Methodology & Dashboard Design

decrption	2017	2018
The air quality of Sofia city picks up gradually in most recent years. As can be seen from the diagram, great changes of average concentration have taken place during 2017 and 2018 from 43.96 to 29.52 . More specially, the average concentration in six stations also declines. From the diagram above, it is easy to see that there are missing data in Mladost and Orlov Most stations. For Orlov Most station, the official air quality dataset only consists of the data from 2013 to 2015. While, the dataset only consists of the data of 2018 for Mladost station. When we do the analysis, there would be some errors may occur. For Druzhba, the average concentration significantly decreases from 48.79 to 18.25 from 2013 to 2018. The average concentration is the lowest among other stations. For Nadezhda, the average concentration decreases almost by half from 57.68 to 31.35 in one year. For Hipodrum, IAOS/Pavlovo, annual average concentration is slightly higher than overall average concentration. Until 2018, the average concentration has slightly decreased.		400px