Open Access
Table 6
Differences in goodness-of-fit statistics between versions 1 and 2 of the models. Positive values indicate larger values of the goodness-of-fit statistics in version 2 of the models.
| Model |
Goodness of fit |
||||||
|---|---|---|---|---|---|---|---|
| Region | Dependent variable | Version | ΔrRMSE | ΔMSA | ΔrME | ΔPrecision | ΔCorrelation |
| Polar | |Grad_Ne@100km| | −0.03 | −1.3 | 0.00 | 0.19 | 0.02 | |
| |Grad_Ne@50km| | −0.03 | −1.2 | 0.00 | 0.07 | 0.01 | ||
| |Grad_Ne@20km| | −0.03 | −2.0 | −0.02 | 0.08 | 0.02 | ||
| IPIR_ix | −0.02 | −0.8 | −0.01 | 0.20 | 0.00 | ||
| Ne | With currents | −0.57 | −2.0 | −0.02 | −1.64 | −0.59 | |
| Without currents | −0.02 | −0.7 | −0.01 | −0.06 | −0.02 | ||
| Auroral | |Grad_Ne@100km| | 0.01 | 0.6 | 0.00 | 0.17 | −0.08 | |
| |Grad_Ne@50km| | 0.00 | 0.3 | −0.01 | 0.17 | −0.04 | ||
| |Grad_Ne@20km| | 0.02 | −0.3 | −0.06 | 0.23 | −0.06 | ||
| IPIR_ix | 0.03 | 1.1 | −0.03 | 0.26 | −0.05 | ||
| Ne | 0.00 | −1.3 | −0.06 | −0.02 | −0.10 | ||
| Mid-latitude | |Grad_Ne@100km| | −0.01 | −0.8 | −0.01 | −0.03 | −0.09 | |
| |Grad_Ne@50km| | −0.01 | −0.8 | −0.01 | −0.04 | −0.08 | ||
| |Grad_Ne@20km| | No version 2 model fitted | ||||||
| IPIR_ix | No version 2 model fitted | ||||||
| Ne | −0.01 | −0.4 | −0.03 | −0.09 | 0.03 | ||
| Equatorial | |Grad_Ne@100km| | −0.44 | −15.5 | −0.44 | −0.60 | 0.10 | |
| |Grad_Ne@50km| | −0.09 | −4.9 | −0.15 | 0.15 | 0.14 | ||
| |Grad_Ne@20km| | −1.72 | −40.1 | −1.16 | −1.45 | −0.01 | ||
| IPIR_ix | −0.01 | 3.4 | −0.04 | 0.06 | 0.10 | ||
| Ne | With currents | 0.03 | 0.3 | −0.03 | 0.02 | 0.13 | |
| Without currents | −0.06 | −5.4 | −0.13 | −0.18 | 0.17 | ||
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