The data links found on these pages are a representative sample of the real-time data sources that are available on the Web. For more extensive directories of on-line data real-time data sources, you should consult the three web sites below:

• Arecibo Observatory Resonance Lidar Live Update (maintained by Arecibo Observatory, Arecibo, Puerto Rico

• Latest Space Weather (maintained by Richard Link, Southwest Research Institute, San Antonio, Texas)

• MIT Haystack Observatory MADRIGAL Database Web Site

• Real-time Space Weather Page (maintained by Andrew Urquhart, Rice University, Houston, Texas)