After reviewing the link on www.contextures.com,

I found useful information to assist me in trying to format a organized pivot table. In excel, pivot tables are known to be the most powerful, useful, and beneficial for large data sets.  They summarize, sort, and organize information in tables that are easily adjustable. They allow you to interact and explore data in different ways and look at the same data with different perspectives. 

An example of a sales data set, from ExcelJet includes a pivot table that is easy for adjustments because in this case data changes frequently. There are many other benefits to using Pivot Tables, they are easily changeable or flexible. They are accurate, take less time, and you can create pivot charts from the pivot table. 

With pivot tables there are many ways to summarize and group data, for example the pivot table sum by the month using the data grouping feature on excel.