Analysis of local ionospheric variability based on SVD and MDS at low-latitude GNSS stations

Earth, Planets and Space

Table 1 Correlation coefficients for the first three singular vales obtained from the three GNSS stations data sets and IRI models

Singular values	I	II	III
Corr. Coef. for three GNSS stations with IRI models
KLU (Guntur) and IRI-2007	0.90	0.89	0.88
KLU (Guntur) and IRI-2012	0.91	0.90	0.89
Hyderabad and IRI-2007	0.89	0.86	0.89
Hyderabad and IRI-2012	0.90	0.89	0.87
Bangalore and IRI-2007	0.89	0.87	0.88
Bangalore and IRI-2012	0.90	0.88	0.89