Intravaginal ejaculation latency time (E.g. how long it takes for the male to come after commencing vaginal penetration from start to finish - which means no position breaks, just straight up pumping)
Ages 18-30: 6.5 minutes
Ages: 31-50: 5.4 minutes
Ages: 51+: 4.3 minutes
I'd say I'm above that, yet a lot of women would consider this inadequate. (Strictly talking straight pumpin').