Below is the table of required marks per each category:

Mark	Professor	Asst. Professor	Lecturer	Asst. Lecturer
A*	>80	>70	>55	>45
A	60-79	50-69	35-54	25-44
B	45-59	35-49	24-34	18-24
C	20-44	20-34	15-23	12-17
D	6-19	6-19	6-14	6-11
E	0-5	0-5	0-5	0-5

Marks C, D and E are considered as failed.