A new approach for the generation of real-time GNSS low-latitude ionospheric scintillation maps | Journal of Space Weather and Space Climate

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Table 6

GPR(VQI) error metrics and correlation for the three integration intervals using the cross-validation schemes SSS (“All”) and LOGO (left column shows station or set of stations left out from the interpolation, but used for evaluation), for the additional test set of 475 maps.

Station	Interval	MAE	RMSE	MXAE	MMAX	MMIN	STDA	CORR
All	01-min	0.0469	0.0772	0.2391	0.1421	−0.2234	0.0613	0.7738
	02-min	0.0393	0.0665	0.2352	0.1545	−0.2121	0.0536	0.8596
	16-min	0.0461	0.0761	0.3746	0.3450	−0.2432	0.0605	0.8814
SJCE LSJK SJCU	01-min	0.0588	0.0916	0.1831	0.1248	−0.1578	0.0702	0.7955
	02-min	0.0641	0.0951	0.2011	0.1516	−0.1646	0.0703	0.7954
	16-min	0.0760	0.1096	0.3002	0.2427	−0.2431	0.0790	0.7845
SJCE	01-min	0.0375	0.0591	0.1160	0.0967	−0.0751	0.0458	0.9193
	02-min	0.0414	0.0635	0.1309	0.1205	−0.0674	0.0482	0.9232
	16-min	0.0572	0.0908	0.2437	0.2387	−0.1193	0.0705	0.8804
LNTA	01-min	0.0757	0.1169	0.1629	0.0767	−0.1250	0.0891	0.5003
	02-min	0.0800	0.1199	0.1791	0.0986	−0.1334	0.0893	0.5039
	16-min	0.0904	0.1275	0.2495	0.1610	−0.2026	0.0899	0.5201
LBOA	01-min	0.1069	0.1539	0.2191	0.0391	−0.1997	0.1106	0.5846
	02-min	0.1067	0.1509	0.2331	0.0562	−0.2116	0.1067	0.6100
	16-min	0.1035	0.1407	0.3063	0.1020	−0.2862	0.0952	0.6608
INCO	01-min	0.0593	0.0932	0.1699	0.1178	−0.1360	0.0719	0.8123
	02-min	0.0628	0.0960	0.1906	0.1436	−0.1478	0.0725	0.8154
	16-min	0.0730	0.1090	0.2819	0.2398	−0.2218	0.0810	0.8115

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