Which type of Stresses should i consider?

Dear Staad Professionals,

I have doubt in my educational project. i saw different stresses in post processing menu.i.e, Max Compressive stresses and Max Axial stresses.

what is the differences between those results? please find the images of those results.

i need to check Compressive stress i.e Fck=20 N/sq mm for M20 grade concrete. which image (1 or 2 ?) should i take? for stress verification

please clarify about staad results.

Thanks,

Best regards.

Best regards.