I was honestly surprised not to see harmonic mean listed as an option for Analyze/Tabulate and Analyze/Distribution, given that both the arithmetic and geometric are provided.
I am working with ratio data in the semiconductor domain, specifically IPC (instructions per cycle) where the instruction count numerator is held constant. Harmonic mean would be a natural fit. IPC is a very common metric in this domain.
I realize that by taking the reciprocal of the arithmetic mean of the reciprocals (CPI, in this case), is mathematically equivalent. However, doing the transform is tedious in my use case, and support for harmonic mean seems like a trivial thing to add.