Issues with a pivot table

I have a data set that looks to be identical, however when I create a pivot table, part of that data is being separated from the rest. I have isolated the data that is being separated, but I cannot find any difference between the two groups. ANy ideas what would cause this or how to figure out why it is happening?

Found it, space at the end of the data, I really wish excel would not let that happen, thankfully we have the TRIM function.