difference in uncertainty between pedigree matrix and value in the flow

Question

Hello everyone, I've noticed a difference between the uncertainty values given in the "Electricity generation, hydro, run-of-river | Electricity, high voltage | Cutoff, U" inventory and what is indicated by the data quality in the pedigree matrix. For example, water (image, runoff) has a gsigma of 1.22140, while the value in the pedigree matrix would be 1.8391. Can you explain why there is such a difference? Thank you very much.

Answer 1

I have a similar question. If the "Amount" for a given flow is different from the "gmean" specified and a Monte Carlo simulation is run, what will the software do? Will it use the numbers from the "uncertainty" (gmean and GSD) or will use a constant value from the "amount" column.