In the diagram B5, the y axis is number of staff.
In the diagram B6, the y axis is staff-months.
Q1. What is the meaning of staff-months, example?
Q2. What is the relationship between number of staff and staff-months?
Is the staff months calculated from # of staffs?
Staff-month is like a product of Number of Staffs" and "Months of Employment."
For example, if ...
Number of Staff versus Staff Month is figured. The meaning of staff-months are determined.