The program gives a circle diagram:
Stability factor n with different crane turning angles.
A straight line from the centre of the circle to the direction in which the crane is turned.
The stability factor to that direction.
a = 0° straight forwards
a = 90° straight angle to side
a = 180° straight backwards
The stability factors are shown in the form of different sized circles.
The centre of the circles is the cranes slewing centre.
The circle with the biggest radius stands for the stability factor n=1.8 and the smaller for: 1.6 , 1.4 , 1.2 , 1.0 , 0.8.