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

Table 1

Performance assessment comparison of OKSM, FFNN, and DeepAR during the 2019 solar eclipse.

Date	RMSE			CC			MAE			NRMSE			R-squared
	OKSM	FFNN	DeepAR	OKSM	FFNN	DeepAR	OKSM	FFNN	DeepAR	OKSM	FFNN	DeepAR	OKSM	FFNN	DeepAR
22-12-2019	1.66	1.44	2.08	0.9837	0.9723	0.9888	1.34	1.10	1.68	0.15	0.13	0.19	0.9171	0.9375	0.8704
23-12-2019	1.35	2.24	1.91	0.9794	0.9645	0.9617	0.91	1.49	1.27	0.12	0.20	0.17	0.9589	0.8869	0.9180
24-12-2019	1.20	0.91	1.97	0.9849	0.9926	0.9631	1.00	0.73	1.33	0.11	0.09	0.18	0.9675	0.9814	0.9127
25-12-2019	1.11	1.25	0.80	0.9930	0.9823	0.9936	0.92	0.95	0.70	0.11	0.12	0.08	0.9718	0.9643	0.9853
26-12-2019	1.40	1.96	2.15	0.9822	0.9497	0.9332	1.05	1.44	1.61	0.14	0.19	0.21	0.9449	0.8925	0.8703
27-12-2019	1.54	2.09	2.37	0.9696	0.9420	0.9448	1.12	1.45	1.51	0.15	0.20	0.22	0.9360	0.8810	0.8481
28-12-2019	1.42	1.91	2.74	0.9905	0.9927	0.9622	1.08	1.46	2.07	0.13	0.17	0.25	0.9595	0.9267	0.8497
Average	1.38	1.69	2.00	0.9833	0.9709	0.9639	1.06	1.23	1.45	0.13	0.16	0.19	0.9508	0.9243	0.8935