VizieR

I/360       Gaia DR3 Part 6. Performance verification (Gaia Collaboration, 2022)

Gaia Data Release 3 (Gaia DR3) Part 6: Performance verification. Gaia collaboration <Astron. Astrophys., in prep. (2022)>
The document above follows the rules of the catstd.doc; from this documentation it is possible to generate f77 program to load files into arrays or line by line
VizieR