I've confused myself tonight, can someone help?

I have a spreadsheet with tabs for each month with data such as the following on each tab.

Name Rate 1 Rate 2 Rate 3 Rate 4
Adam 5 2 4 0
Jane 0 3 4 2
Bob 1 1 2 3

I want to be able to have a summary tab which calculates a total for each rate for each person for all months.
The summary tab would be in alphabetical order, as each tab may have different names in different orders.
How would I do this please?