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

Table 2

Performance assessment comparison of OKSM, FFNN, and DeepAR during the 2020 solar eclipse.

Date	RMSE			CC			MAE			NRMSE			R-squared
	OKSM	FFNN	DeepAR	OKSM	FFNN	DeepAR	OKSM	FFNN	DeepAR	OKSM	FFNN	DeepAR	OKSM	FFNN	DeepAR
18-06-2020	0.74	1.03	1.25	0.9952	0.9928	0.9877	0.52	0.78	0.96	0.08	0.11	0.14	0.9883	0.9773	0.9682
19-06-2020	1.20	1.32	1.33	0.9907	0.9922	0.9963	0.92	1.06	1.01	0.12	0.14	0.15	0.9744	0.9689	0.9570
20-06-2020	1.01	1.04	1.91	0.9912	0.9913	0.9659	0.67	0.80	1.41	0.11	0.11	0.22	0.9802	0.9788	0.9245
21-06-2020	0.97	1.19	1.57	0.9896	0.9851	0.9882	0.75	0.95	1.29	0.10	0.13	0.17	0.9786	0.9678	0.9589
22-06-2020	1.52	1.05	1.57	0.9767	0.9904	0.9797	1.04	0.79	1.01	0.16	0.11	0.16	0.9539	0.9779	0.9553
23-06-2020	1.75	2.06	2.13	0.9921	0.9920	0.9920	1.46	1.88	1.67	0.22	0.25	0.22	0.9276	0.9001	0.9218
24-06-2020	2.14	1.76	1.88	0.9617	0.9690	0.9781	1.80	1.44	1.59	0.22	0.18	0.22	0.8798	0.9195	0.9249
Average	1.33	1.35	1.66	0.9853	0.9876	0.9840	1.02	1.10	1.28	0.14	0.15	0.18	0.9547	0.9558	0.9444