how to perform Ttest using Excel VBA on a large dataset

Hi ,
I have a large dataset of traffic volume for 50 intersections corresponding to 12 movements for 5 time periods in 15 minute intervals for 2 months from consecutive years

I am trying to make a comparison between same month, same intersection, same movement, same time period using the T Test. How can I implement this in the macro. The problem that I am facing is when the number of time stamps reduce from the 16 ( in the attached file ) to 15 how do I take this into account. Is there a way to perform the test only when intersections ,movement, month, day, time period equals for either year.