Angle 60:
1/4 sd: 1.25
1/2 sd: 1.75
3/4 sd: 2.2
1.0 sd: 2.45
1.5 sd: ~3.0

Angle 70:
1/4 sd: 1.5
1/2 sd: 2.15
3/4 sd: 2.5
1.0 sd: 2.9
1.5 sd: ~3.55

Angle 80:
1/4 sd: 2.1
1/2 sd: 2.85
3/4 sd: 3.5
1.0 sd: 4.0