Each session is standardized against only its prior 252 sessions, with at least n=60 finite observations. Cosine distance uses at least n=18 shared dimensions. The current vector has n=23 usable dimensions.
Historical net GEX and max-pain distance are excluded because the delayed options source does not provide a dependable chain archive. Current options readings remain in the Confluence Engine, but they do not enter this historical comparison until point-in-time history exists.
ES uses a continuous futures series. It is useful for a consistent daily history, but it is not a tradable contract and may include roll effects. COT percentiles are weekly releases carried forward across daily state rows.