Table 4 Comparison results of the final GIMs w.r.t. GPS dSTECs from September 2017 to December 2018
From: Status of CAS global ionospheric maps after the maximum of solar cycle 24
GIMs | Bias in TECu | STD in TECu | RMS in TECu | Rel. error/% | Days |
|---|---|---|---|---|---|
CASG | − 0.07 | 1.69 | 1.76 | 15.3 | 485 |
CODG | 0.04 | 1.49 | 1.57 | 13.8 | 490 |
EMRG | 0.06 | 1.94 | 1.98 | 15.2 | 489 |
ESAG | 0.09 | 1.90 | 1.99 | 17.3 | 490 |
JPLG | 0.53 | 1.72 | 1.84 | 9.9 | 489 |
WHUG | 0.12 | 2.80 | 2.88 | 18.8 | 451 |
UPCG | 0.16 | 1.88 | 1.94 | 14.3 | 375 |
IGSG | 0.27 | 1.63 | 1.71 | 11.7 | 487 |