I have a list of values, all under the column header of entered date
Person -- Jan 1 -- Jan 2 -- Jan 3 .......
Bob -- 6 -- 8 -- 10 ....
Alex -- 4 -- empty -- empty
what I need to do is, based on date and person, if the cell is empty or zero, find the next previous maximum value.
In the example above, if I asked for the maximum value for Alex on Jan 3rd, the returned value would be 4
If I asked for the maximum value for Bob on Jan 3rd, the maximum value would be 10.