I've been struggling with this point for some time. In Automotive, ISO 26262 part 5 provides an equation to calculate the PMHF. A follow-up example explains it with numbers. My issue is: When I try to apply the same equation on the solved example in the standard, I cannot generate the same results. The main tool we use to calculate the PMHF is Medini, and it uses a completely different strategy to get it. Can someone inform me how these values are generated with the equation?