Model (Degree/Order)

RMS-COMPUTED

RMS-REFINED

% Increase in RMS

% Decrease in RMS

HUST-Grace2016s (160)

10.44

11.307

8.30%

ITU_GGC16 (280)

14.515

12.114

16.54%

EIGEN-6C4 (2190)

9.613

8.861

7.82%

GGM05G (240)

11.058

13.416

21.32%

GECO (2190)

10.567

8.961

15.20%

GO_CONS_GCF_2_SPW_R4 (280)

17.896

13.77

23.06%

EGM2008 (2190)

12.993

10.187

21.60%