Exercise: Calculating a model Air Quality Index for countries
{"Image DocumentName": "Exercise: Calculating a model Air Quality Index for countries", "Image ImageDescription": "Background: Often a single air quality index is a composite of many indicators on air quality. When direct measurements are not available, proxies are used, such as the use of emissions when air concentrations are not available.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}