This Pipe takes the air quality readings for Beijing, as displayed on http://iphone.bjair.info/, and scrapes it to just return the air quality number and description. This Pipe is being used as a method to display the Beijing air quality reading using GeekTool.
This Pipe takes the Twitter feed from BeijingAir, an air quality monitoring station on the top of the American Embassy in Beijing, and uses Regex to edit it into a format similar to CSV files (Comma Separated Values). This could be used to make a graph of hourly air quality.