As a golfer using the Garmin Golf iOS app,
I want to see a Peak Distance Average for each club,
So that I can understand my true playable distance without outliers from mishits or single longest shots.
Acceptance Criteria:
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For each club, system calculates Peak Distance Average = mean of top ~20% of recorded shot distances.
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Peak Distance Average is displayed alongside existing metrics (Average Distance, Max Distance).
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Calculation excludes manually deleted shots, consistent with existing Average Distance rules.
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If fewer than 4 shots are recorded for a club, Peak Distance Average is not displayed (to avoid misleading output).
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UI: Metric appears in the club stats screen under “Distances” with label Peak Avg (Top 25%).
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Data updates automatically when new shots are recorded or edited.
Notes:
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Formula: Sort shot distances per club → take highest 25% → compute mean.
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Should align with current distance units (yards/meters setting).
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Peak Distance Average should be included in CSV/data exports where available.