Save data from several lines

Hello,

I’m new here, I’ve made an unsteady simulation of a flow inside a channel, with a time step of 0.01 seconds. The results are saved at each time step.

Now I want to save the velocity from all the time steps from several lines (9) that are placed along the channel. How can I do that?
Until now I’ve managed to save the velocity from all the time steps from a single line only, using file ->save data.

Thank you very much fro your support,
Ionut

Can you share an image of your dataset including the pipeline browser and information panel ?