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Table 4 Mean values at 00 LT for vTECGNSS and vTECIRI for the four regions

From: PCA and vTEC climatology at midnight over mid-latitude regions

Region vTECGNSS (TECu) vTECIRI (TECu)
East West East West
North America 19.7 15.6 14.9 10.0
South America 15.7 20.8 12.8 20.9
Asia 19.3 18 13.2 11.9
Oceania 20.0 13.7 15.7 7.6