Presented by the NOAA/Space Weather Prediction Center

10 frames/second 5 frames/second 2 frames/second 1 frame/second

TEC Maps Image Animation (2009 Jan 16 0000 - 2009 Jan 16 1315 UTC)

Updated: 2009 Jan 16 1330 UTC

To ensure the latest movie, hold down the <Shift> key and select Reload or Refresh from the View menubar. The movie may be choppy for the first run but once cached, should run smoothly. The movie displays images created every 15 minutes. e.g. 00,15,30,etc. Java must be enabled in your browser for this page to function properly.

Button explanation:

• Play animates the movie from the current frame.
• Pause stops the movie and holds at the current frame.
• Frame > advances the movie one frame from the current frame.
• Frame < rewinds the movie one frame from the current frame.
• Reset displays the first frame in the movie sequence.
• Loop animates the movie from the current frame to the end of the movie then restarts at the beginning and continuously plays until Pause or Reset is activated.
• Select a delay time changes the speed of the movie. Default is 5 frames per second.

Updated: 2009 Jan 16 1330 UTC     Data from a total of 72  real-time GPS stations from the CORS , GPS/Met, and IGS networks are used for these calculations.

US-TEC provides vertical TEC and slant path values of the line-of-sight electron content to the GPS satellites in view at the time. Note that TEC values in regions outside of the CONUS have no data and should be treated with caution. This ionospheric product is designed to estimate the signal delay for single and dual frequency GPS applications. US-TEC products are provided for today and yesterday, prior to yesterday please go to NGDC.