Can someone please tell me what the stress values are in the Matlab examples?

Hi

Can someone please implement one of the below examples and tell me what the stress values are? Are they Newton, Pascals, something else?

Thanks

https://uk.mathworks.com/help/pde/ug/pde.staticstructuralresults.interpolatestress.html

https://uk.mathworks.com/help/pde/ug/pde.transientstructuralresults.evaluatestress.html

https://uk.mathworks.com/help/pde/ug/finite-element-analysis-of-electrostatically-actuated-mems-device.html