Table 3 Mean values of vTECGNSS, V HWM07, and the east–west difference, dvTECGNSS, and dV HWM07, at 00 LT for the highlighted sectors in the four regions
From: PCA and vTEC climatology at midnight over mid-latitude regions
Region | \(\overline{\text{vTEC}}\) GNSS (TECu) | \(\bar{V}\) HWM07 (m/s) | dvTECGNSS (TECu) | dV HWM07 (m/s) | ||
|---|---|---|---|---|---|---|
East | West | East | West | |||
North America | 19.7 | 15.6 | 22.3 | 12.3 | 4.1 | 10 |
South America | 15.7 | 20.8 | 5.7 | 15.8 | − 5.1 | − 10 |
Asia | 19.3 | 18 | 18.8 | 17 | 1.3 | 1.8 |
Oceania | 20.0 | 13.7 | − 0.4 | − 6.5 | 6.3 | 6.1 |