| Instrument* | Version | Short description |
| GOME : | GO-v1 | Fixed albedos |
| GO-v2 | LER albedos | |
| GO-v3 | LER albedos, GomeCal used | |
| GO-v4 | New LER albedos (by N. Fournier) New RTM calculations (by P. Wang) | |
| GO-v5 (FRESCO+) | New RTM (incl. Rayleigh scattering) calculations (by P. Wang) | |
| GO-v6 | MERIS albedos and hitran2008 used | |
| GO-v7 | Use of SCIAMACHY LER climatology (by G. Tilstra, 2015) | |
| SCIAMACHY : | SC-v2 | LER albedos |
| SC-v3 | New LER albedos (by N. Fournier) | |
| SC-v4 | New RTM calculations (by P. Wang) | |
| SC-v5 (FRESCO+) | New RTM (incl. Rayleigh scattering) calculations (by P. Wang) | |
| SC-v6 | MERIS albedos and hitran2008 used | |
| SC-v7 | Use of SCIAMACHY LER climatology (by G. Tilstra, 2015) | |
| GOME-2 : | G2-v2 | LER albedos |
| G2-v5 (FRESCO+) | New RTM (incl. Rayleigh scattering) calculations (by P. Wang) | |
| G2-v6 | MERIS albedos and hitran2008 used | |
| G2-v7 | Use of GOME-2 LER climatology (by G. Tilstra, 2015) | |
| G2-v8 | Use of GOME-2 DLER climatology (by G. Tilstra, 2022) | |
* Each version and each instrument has its own transmission database including slit function.
Format description of FRESCO and FRESCO+ can be found here.