This array* formula in A2 of Sheet2 will give you a list of unique values from the range in B10:B44:
I've copied the formula down to row 6 in the attached file.
*An array formula must be confirmed using the key combination of Ctrl-Shift-Enter, rather than the usual <Enter>
Then you can use this formula in B2:
which can be copied across and down, as required. I've copied it down to row 6 and across to column M, although the results will only show if there is data in the appropriate monthly column.
Hope this helps.
Pete
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