Extract values in each column

[JieJenn]

Trying to figure out if there is a way that I can extract all the values in each column (Column B:M). I tried the array formula =INDEX(C15:C66,MATCH(TRUE,C15:C66<>0,)), and because the starting row in each column is different, so my formula doesn't work.

I have attached a simple workbook. Any help is appreciated.

[zbor]

Here is solution based on example that data in each month are in continuos order

[JieJenn]

That works great. Thanks.