Skip to main content

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