CST radiation diagram

Hello everyone.

I have questions analyzing the diagram in the CST software.

The 3 blue line we have the directivity, ok?

In the circumference of red color we have the shape of the magnetic field (its formation), ok?

Does the green circle represent the gain (S11)?

dark blue shows the main lobe, two light blue lines shows the half power beamwidth. red shows the far-field/radiation pattern, green circle shows sidelobe level.