All 38 observer positions with full geometric data
Observer Track: 37.14m to 0.1m (horizontal distance along track)
Object Position: 4m above observer level, 5m offset to the side
Hypotenuse: Direct viewing distance from observer to object
Vertical Angle: Looking up at object (6.1° far → 38.7° near)
Horizontal Angle: Object to the side (7.7° far → 88.9° near)
All triangles converge at the object (apex)