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GPS

Shadow Speed

—km/h

10 min

—km/h

20 min

—km/h

Session

—km/h

Ground speed

—km/h

Climb / sink

—m/s

Track

—°

MacCready c

Shadow Speed is exact only when c matches the real next thermal; otherwise read it as a comparison against the session average. Uses GPS ground speed (no wind) and a smoothed GPS climb.

Pirker

In-flight Shadow Speed computer. Keep the phone in view, screen on, with Precise Location enabled.