Statistical models of the variability of plasma in the topside ionosphere: 1. Development and optimisation | Journal of Space Weather and Space Climate

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Table 4

As Table 3, but for equatorial models in three local time sectors. These are dayside (08-18 LT), bubbles (18-01 LT) and nightside (01-08 LT).

Model		Goodness of fit
Region	Dependent variable	rRMSE	MSA	rME	Precision	Correlation
Equatorial	\|Grad_Ne@100km\|	0.43	131	−0.05	0.57	0.30
	\|Grad_Ne@50km\|	0.21	114	−0.02	0.56	0.29
	\|Grad_Ne@20km\|	1.16	170	−0.12	0.61	0.28
	IPIR_ix	0.34	123	−0.04	0.48	0.19
	Ne	0.16	111	−0.03	0.83	0.53
Equatorial: Dayside	\|Grad_Ne@100km\|	2.76	246	−0.01	0.47	0.36
	\|Grad_Ne@50km\|	2.75	246	−0.01	0.46	0.35
	\|Grad_Ne@20km\|	0.79	156	−0.05	0.44	0.40
	IPIR_ix	0.27	116	0.00	0.35	0.35
	Ne	0.32	123	0.01	0.72	0.74
Equatorial: Bubbles	\|Grad_Ne@100km\|	0.36	126	0.00	0.45	0.42
	\|Grad_Ne@50km\|	0.24	116	0.00	0.42	0.40
	\|Grad_Ne@20km\|	0.32	121	0.00	0.39	0.37
	IPIR_ix	0.33	118	0.01	0.33	0.33
	Ne	0.25	117	0.00	0.66	0.61
Equatorial: Nightside	\|Grad_Ne@100km\|	0.23	115	0.00	0.30	0.30
	\|Grad_Ne@50km\|	0.23	115	0.00	0.29	0.29
	\|Grad_Ne@20km\|	0.41	125	0.00	0.27	0.27
	IPIR_ix	0.29	126	0.00	0.28	0.29
	Ne	0.16	112	0.00	0.42	0.43

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