AI Citation Sources: Which Publishers AI Engines Name and Cite
Evidence pack, 5W Public Relations Research

Measured: October 26, 2026 · 24 questions × 3 runs · 288 AI answers
This pack holds the measurement data behind the report. Every number in the report can be
recounted from these files. Counts in the report come from summary.csv and per_engine.csv.

Files:
- summary.csv: One row per tracked name: answers naming it, appearance rate and 95% interval, first-mention position, own-domain citation, citation share, Google AI Overview counts and five-engine totals.
- per_engine.csv: The same counts split by engine (ChatGPT, Claude, Gemini, Perplexity).
- significance.csv: Pairwise comparisons between the leading names (z-test, p-value, whether the 95% intervals overlap).
- sources.csv: Cited domains: number of citations, share of all citations, and how many answers cited each domain.
- entity_rollups.csv: Spellings and name variants counted together with each tracked name.
- trials.csv: One row per answer: engine, question, run, names found, citations, measurement time.
- raw_responses.jsonl: The full text of every answer and Google AI Overview, with its citations, one JSON record per line.

SHA-256 checksums:
6571ff538d1f05a6dbf1cb13e8d886d6075f5b410d0628723fa4640c023aa3d3  summary.csv
b45dea7a70a276d252c27909d37d33e3f7c5e6a8fc56b67afba1e06d4c8a153c  per_engine.csv
6e37c16087f62e8e85533d00447d9e1cc55a64136aa507206bedca67eb900906  significance.csv
67be5730c5f5c29c58f4f9fe34ef31e80eb5995ee7f310ab7294662b3d354f39  sources.csv
4487ac2964b8701bae7a64578765dd71766730be9a4928619cd87351d5dad423  entity_rollups.csv
91a343f14dec299e2dbf17899222120d7a38bce85e024216c878ae41df68a2fa  trials.csv
87ce337cd5be98f1d74f7a09cf122faaf1feb6915d02e1123653f6bd4a8502b2  raw_responses.jsonl

Questions or corrections: info@5wpr.com
