Forecasting Ionospheric TEC Changes Associated with the December 2019 and June 2020 Solar Eclipses: A Comparative Analysis of OKSM, FFNN, and DeepAR Models

Table 4

Performance assessment using linear regression (2019).

Model	Intercept	Slope	Pearson’s R
OKSM	0.2941 ± 0.19	0.9891 ± 0.01	0.97575	0.95208
FFNN	0.6758 ± 0.24	0.9028 ± 0.01	0.96444	0.93015
DeepAR	0.8859 ± 0.29	0.8896 ± 0.02	0.94753	0.89782