Professional (can LD at will, full control, always realistic)

Expert (can LD almost at will, full control, always realistic)

Intermediate Level3 (can LD quite often, full control, always realistic)

Intermediate Level2 (can LD infrequently, full control, always realistic)

Intermediate Level1 (can LD quite often, good control, often realistic)

Student Level3 (can LD infrequently, good control, often realistic)

Student Level2 (can LD quite often, some control, sometimes realistic)

Student Level1 (can LD quite often, some control, rarely realistic)

Novice Level3 (can LD infrequently, some control, rarely realistic)

Novice Level2 (can LD infrequently, little control, rarely realistic)

Novice Level1 (can LD infrequently, little control, never realistic)