How do I select a narrow data range for a chart and then save the chart?

[Lyra]

I need a chart that compares .02 to .05 liters with 100400 to 100408 kPa for a painfully tedious homework assignment. I am new to libre office, and I have never made a chart with any software before. When I click “edit data range” I see some values that I don’t understand. I think some of it is for the columns, but I don’t see anything to edit the actual displayed range on the x and y axes.

If you could please explain this gibberish and tell me how to usefully edit it, I would be very thankful. I’ll also need to save the chart to send to my teacher IF I can manage to create a graph that looks like it is displaying some measurements.

[Lupp]

Did you read the Calc guide, chapter 3?
Complete guides and also split off chapters available from this site.
(You surely understand that not every new user will get a taylored tutorial here.)

[Lupp]

(Just a guess what you need.)
You have to select the axes one by one.
Doubleclick the chart, click the contained ‘Wall’ - that is the range actually displaying the graphics - click one axis, use the context menu (rightclick), select ‘Format Axis’, goto tab ‘Scale’, disable ‘Automatic’ … and so on.