A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Thank you very much for your insight and attempt to help. I decided that I needed to include my code here so that others could see exactly what I was doing, but before I could do that I needed to "clean" my code so that it didn't have proprietary information. Sometimes you need to look at something from a totally different angle to see the obvious. I found that my code for processing the next data tab (Tuesday) was creating chart tab names with exactly the same tab names as for the Monday data tab. I was creating Chart titles that were unique but the tab name has a smaller size limit. Unique tab names solves the problem.