>cStaff cMonth nSum
>----------------------------------
>StaffA January 1000
>StaffA Febuary 1500
>StaffA March 2000
>StaffA April 4000
>StaffA May 3300
>StaffB January 1010
>StaffB Febuary 1300
>StaffB March 2300
>StaffB April 4500
>StaffB May 3000
>
>
>>cStaff January Febuary March April May >--------------------------------------------- >StaffA 1000 1500 2000 4000 3300 >StaffB 1010 1300 2300 4500 3000 >>