How to calculate mean time series of more time series with different sampling?

So I have several x-y series (measurement data) where x is different for every series and somehow I want to have an average x-y series (the y values are averaged).

I am placing a figure for better understanding the situation:

How can I do this?

[Andrei Bobrov]

Please attach small part of your data, example: 5M-01, 5M-02,5M-03.

Answer 1

[KSSV]

Read about interp1. Do interpolation and get all the series to same size and then do mean.

[Péter Király]

Thank you very much, managed to solve the issue with this!