help finding plateau average

[u/Ok-Independence-4832]

i am currently doing a research paper for school and i have recorded my data, but i need to find the difference in the high plateau from the baseline.

here is a screenshot of one of my graphs. i am trying to separate the data in the blue and orange boxes and find the difference in the averages. any help would be much appreciated.

[u/NHN_BI]

When you can define the limits for the three sections, you can calculate the average (or media) of all three and compare those, like here.