| Model name | Year | Maximum degree | Data | References |
| NULP-02s | 2017 | 250 | GOCE (42 months) | [18] |
| SPW_R5 | 2017 | 330 | GOCE (42 months) | [19] |
| IfE_GOCE05s | 2017 | 250 | GOCE (42 months) | [20] |
| IGGT_R1 | 2017 | 240 | GOCE (2 months) | [21] |
| GOSG01S | 2018 | 220 | GOCE (20 months) | [22] |