Table 2 Percentage of variability for each data set and region
From: PCA and vTEC climatology at midnight over mid-latitude regions
Region | vTECGNSS | vTECIRI | V HWM07 | |||||
|---|---|---|---|---|---|---|---|---|
Mode 1 (%) | Mode 2 (%) | Mode 3 (%) | Mode 1 (%) | Mode 2 (%) | Mode 1 (%) | Mode 2 (%) | Mode 3 (%) | |
North America | 87 | 5 | 2.3 | 90 | 7 | 91 | 5.7 | 2.8 |
South America | 94 | 3.5 | 1 | 95 | 3.9 | 60 | 27 | 11 |
Asia | 91 | 4.3 | 1.3 | 98 | 1 | 85 | 9.6 | 4.7 |
Oceania | 93 | 2.8 | 1 | 97 | 1.7 | 50 | 33 | 16 |