ISSS608 2018-19 T1 Assign Qiao Xueyu Visualization

Air Polution in Sofia, Bulgaria

Overview

Data Preparation

Visualization Design

Insights

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Official Air Quality Measurements

	The Map shows the distribution of official stations. Hover the mouse over each flag to get detailed information Click the flag on the dashboard to highlight the Hourly Trend of this selected station
	The Hourly Trend graph shows the average hourly PM10 concentration of each station. Hover the mouse over each dot to see the average concentration during a certain time period Slide the sidebar to select the year to view Select the standard deviation from the drop-down list Click the station names to highlight the station location on the Map Parameter created: Standard Deviation: to control the number of standard deviation Calculation Fields created: Upper Bound: to draw the upper bound Lower Bound: to draW the lower bound Outlier: to judge whether a value exceeds the bounds
	The Overall Trend graph shows the trend of each station according to the date granularity selected. Click the blue boxes to adjust the date granularity

Citizen Science Air Quality Measurements

	The Coverage Map shows the citizen sensors' coverage. The color of circle shows the percentage of anomalies with red indicating high percentage of anomalies The size of circle shows the number of measure records Click from the Anomalies list to select the well-operated or badly-operated sensors Click the play button to view the animation of sensors' operation over the months Click the red circles to view the anomalies details on the Anomalies graph and the location on the Concentration Map Hover the mouse over each circle to view the average hourly PM10 and PM2.5 concent
	The Hourly Trend graph shows the average hourly PM10 concentration of each station. Hover the mouse over each dot to see the average concentration during a certain time period Slide the slider to select the year to view Select the standard deviation from the drop-down list Click the station names to highlight the station location on the Map Parameter created: Standard Deviation: to control the number of standard deviation Calculation Fields created: Upper Bound: to draw the upper bound Lower Bound: to draW the lower bound Outlier: to judge whether a value exceeds the bounds
	The Coverage Map shows the citizen sensors' coverage. The color of circle shows the percentage of anomalies with red indicating high percentage of anomalies The size of circle shows the number of measure records Click from the Anomalies list to select the well-operated or badly-operated sensors Click the play button to view the animation of sensors' operation over the months Click the circle to view the anomalies details on the Anomalies graph and the location on the Concentration Map Hover the mouse over each circle to view the average hourly PM10 and PM2.5 concentration