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All issues Volume 14 (2024) J. Space Weather Space Clim., 14 (2024) 7 Full HTML
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Table 3

Goodness-of-fit statistics for version 1 of the models. The goodness-of-fit statistics chosen are the root mean square error (RMSE) on a relative scale (rRMSE, RMSE divided by the median of the observed values), the median symmetric accuracy (MSA), the mean error (ME) on a relative scale (rME, ME divided by the median of the observed values), the precision and the correlation.

Model
 Goodness of fit
Region Dependent variable rRMSE MSA rME Precision Correlation
Polar |Grad_Ne@100km| 0.47 135 0.00 0.37 0.36
|Grad_Ne@50km| 0.49 136 0.00 0.37 0.35
|Grad_Ne@20km| 0.58 141 0.00 0.31 0.30
IPIR_ix 0.24 115 0.00 0.46 0.45
Ne 0.16 110 0.00 0.76 0.75
Auroral |Grad_Ne@100km| 0.47 135 0.00 0.31 0.31
|Grad_Ne@50km| 0.18 112 0.00 0.28 0.28
|Grad_Ne@20km| 0.98 168 0.01 0.26 0.24
IPIR_ix 0.24 115 0.00 0.37 0.36
Ne 0.15 110 0.00 0.76 0.75
Mid-latitude |Grad_Ne@100km| 0.19 112 0.00 0.24 0.23
|Grad_Ne@50km| 0.19 113 0.00 0.22 0.21
|Grad_Ne@20km| 0.98 158 0.00 0.20 0.20
IPIR_ix 0.30 126 0.00 0.33 0.34
Ne 0.16 111 0.00 0.73 0.68
Equatorial version A |Grad_Ne@100km| 0.41 131 0.00 0.32 0.32
|Grad_Ne@50km| 0.20 114 0.00 0.34 0.30
|Grad_Ne@20km| 1.15 169 −0.01 0.46 0.26
IPIR_ix 0.32 122 0.00 0.27 0.26
Ne 0.15 111 0.00 0.55 0.55
Equatorial version B |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

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