# ASTR 472 Data

The seven compact exercise CSVs are synthetic/instructor-provided (level 3), generated by `../src/generate_astr472_package.py`; they are not telescope observations. `radio_facility_reference.csv` records live-verified VLA/ALMA/HI4PI specifications with per-row provenance. The actual HI4PI spectra/cubes are public through CDS catalog `J/A+A/594/A116`; no raw radio archive file is bundled. Lab 07 directs students to retrieve one 20-degree subcube and record its file-level provenance. See `../reference-log.md` for exact citation, retrieval metadata, and the remaining human spot-check requirements.