Real-time US-Total Electron Content: Vertical and Slant

Presented by the NOAA/Space Weather Prediction Center

Vertical and Slant Total Electron Content, TEC uncertainty, Difference from 10-day average, GPS stations used, Coefficients, and Daily Empirical Ortho-Normal Functions in the calculations for 2013 Jun 18

Data Files Format

2013 Jun 18     Daily Empirical Ortho-Normal Functions

2013 Jun 18 Vertical & Slant TEC TEC Uncertainty Recent Trend Stations Used Coefficients
0715 - 0730 UTC ✓ ✓ ✓ ✓ ✓
0700 - 0715 UTC ✓ ✓ ✓ ✓ ✓
0645 - 0700 UTC ✓ ✓ ✓ ✓ ✓
0630 - 0645 UTC ✓ ✓ ✓ ✓ ✓
0615 - 0630 UTC ✓ ✓ ✓ ✓ ✓
0600 - 0615 UTC ✓ ✓ ✓ ✓ ✓
0545 - 0600 UTC ✓ ✓ ✓ ✓ ✓
0530 - 0545 UTC ✓ ✓ ✓ ✓ ✓
0515 - 0530 UTC ✓ ✓ ✓ ✓ ✓
0500 - 0515 UTC ✓ ✓ ✓ ✓ ✓
0445 - 0500 UTC ✓ ✓ ✓ ✓ ✓
0430 - 0445 UTC ✓ ✓ ✓ ✓ ✓
0415 - 0430 UTC ✓ ✓ ✓ ✓ ✓
0400 - 0415 UTC ✓ ✓ ✓ ✓ ✓
0345 - 0400 UTC ✓ ✓ ✓ ✓ ✓
0330 - 0345 UTC ✓ ✓ ✓ ✓ ✓
0315 - 0330 UTC ✓ ✓ ✓ ✓ ✓
0300 - 0315 UTC ✓ ✓ ✓ ✓ ✓
0245 - 0300 UTC ✓ ✓ ✓ ✓ ✓
0230 - 0245 UTC ✓ ✓ ✓ ✓ ✓
0215 - 0230 UTC ✓ ✓ ✓ ✓ ✓
0200 - 0215 UTC ✓ ✓ ✓ ✓ ✓
0145 - 0200 UTC ✓ ✓ ✓ ✓ ✓
0130 - 0145 UTC ✓ ✓ ✓ ✓ ✓
0115 - 0130 UTC ✓ ✓ ✓ ✓ ✓
0100 - 0115 UTC ✓ ✓ ✓ ✓ ✓
0045 - 0100 UTC ✓ ✓ ✓ ✓ ✓
0030 - 0045 UTC ✓ ✓ ✓ ✓ ✓
0015 - 0030 UTC ✓ ✓ ✓ ✓ ✓
0000 - 0015 UTC ✓ ✓ ✓ ✓ ✓

Updated: 2013 Jun 18 0742 UTC     Data from a total of 67  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.

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