Click this link for NGS User Friendly CORS data or click on map for individual site information.
Need to plan your GPS Survey with the most current Almanac:
Almanac information is available for download, click here. You may very well need to change the health settings when you use Yuma or SEM almanac data. While the orbital description data is generally usable for months, the satellite health may change at any time.
Need to find out the current conditions of GPS Satellites, click here:
For information on satellite health at times other than the almanac "Time Of Applicability", see the NANUs or status messages. An almanac entry of 000 indicates the satellite is healthy.