REPLACE_BEFORE_LAUNCH. Write a 2-3 sentence intro that sets up what the ERA Calculator computes, who it is for, and what the rest of the article covers.
How the ERA Calculator works
REPLACE_BEFORE_LAUNCH. Explain the underlying formula and the assumptions baked into the calculation. Reference the standards, datasets, or authoritative sources you used. Keep paragraphs short and focused on what changes the result.
Inputs and what they mean
REPLACE_BEFORE_LAUNCH. Walk through each input the calculator accepts. State the units, the typical range, and any input that has an outsized effect on the result. Flag inputs that newcomers commonly misunderstand.
Limits and edge cases
REPLACE_BEFORE_LAUNCH. List the situations where the ERA Calculator should not be used or where the result needs an expert review. Identify the failure modes that the simple formula cannot model, and tell the reader where to look next.