Time Vector of the data

[dara1400]

Thanks in advance for your great work.

I descried my question with an example of dataset:

In Femoral_P csv file, the first column is subject number and there are columns with pt1 ... pt487 names. Are the duration between samples (for instance pt1 and pt2) are the same for all subjects?

There are some None values some subject have more data point.
If I want to compare 2 of them how should I procced?
Should I simply remove the extra data from one of them (for example just get 300 first columns)?