SPARC
The Spitzer Photometry & Accurate Rotation Curves database is the standard real-world dataset for testing any theory that claims to explain galaxy rotation curves without particle dark matter — which is exactly what Book I’s dark-matter account and its RAR-interpolation formula claim to do.
This test is not run
Stated plainly, and repeated in the lab’s own README: the real SPARC survey data is not present on the machine that produced this corpus. This is a known, named gap — not worked around with synthetic data, a proxy, or a claim of confirmation that wasn’t actually checked.
What’s already acknowledged about the fit
Even setting the missing SPARC comparison aside, the corpus’s own symbol glossary flags that the RAR interpolating function used is imported from the published McGaugh–Lelli–Schombert (2016) literature form, not derived from the field equation — and that the acceleration scale a* is a fitted parameter whose value closely tracks the MOND/RAR literature rather than being independently predicted.
What running this test would actually require: see Future Tests.