What time table has 67 in its sum?
The 1 time table and the 67 time table. And that is it!
It will sum up the figures in your pivot table, giving totals for the different categories of data, depending on how the pivot table is set up and what it contains. So for example, if it was analysing sales made by different salesmen in different regions you could get the sum of sales made in each region and the sum of sales made by each salesman.