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SOL index coverage for 30d is incomplete: expected 43200 one-minute returns, found 43164 (99.9167% coverage); returns spanning missing minutes are excluded","fitQuality":{"currentObjective":0.02459563,"previousObjective":0.02744816,"currentLiveError":15.77818589,"previousLiveError":16.94340378},"freshness":null,"comparisonStatus":null,"comparisonNote":null,"rejectedPreviousSnapshotAt":null},"methodology":{"source":"Derivasys proprietary historical SVI surface database","comparison":"Nearest successful surface snapshots approximately 24 hours apart","rrConvention":"25-delta call IV minus 25-delta put IV","bfConvention":"Average 25-delta wing IV minus ATM forward IV","greeks":"Black forward Greeks for a normalized one-SOL ATM-forward call, zero rate, fitted SVI IV","commentary":"Metrics and takeaways are deterministic. 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