Hello,
Athena does not provide data for stages B1, B3, and B5. Based on the NRC guidelines, when a software tool omits certain stages, it is acceptable to assume that the combined impact of stages B1–B5 equals 10% of the impacts from stages A1–A3. To clarify: Should we disregard the individual B-stage impacts that Athena does provide, and instead apply the 10% assumption across the entire B stage? Or, should we keep the B-stage impacts Athena calculates and add the 10% of A1–A3 impacts only to account for the missing stages (B1, B3, and B5)?