ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.
One of a set of tools we're offering as a way to say thank you for being a part of the community.
If that is the same "Semana" as displayed on screen, the PDF shows:
Page 1, Semana = 29 for 7/25
Page 2, Semana = 30 for 7/25
Group 2 will only group things within Group 1... so if you can remove Group 1 of Semana that should fix it.