Cross-tab data is where you have row headings as well as column headings. Consolidating (combining) multiple blocks of such data is a laborious process. Usually the rows and columns do not match across data blocks. You need to do a lot of copy-paste to bring them in the correct order before you can add a formula. Using a 20 year old unknown but powerful feature of Excel you can Consolidate Cross-Tab Data in minutes. You just select the data blocks and let Excel do the dirty work of matching row and column names.