Here are some examples of the main types of the pitch angle distributions together with a sketch of their profiles:

Type One: Field Aligned-Bidirectional Beams

Profile Scan


Type Two: Field Aligned-Unidirectional Beams

Profile Scan


Type Three: Perpendicular-Pancake

Profile Scan


Type Four: Isotropic

Profile Scan


Type Five: Normal-Bell shaped

Profile Scan


Type Seven: Hat Shaped

Profile Scan


Type Eight: Butterfly Shaped

Profile Scan