Examples
Examples
Try the starting example
- Annual maximum observations
- 10,25,18,40,32
- Descending maxima, rank and Weibull return periods (years)
- [[40,1,6],[32,2,3],[25,3,2],[18,4,1.5],[10,5,1.2]]
Try another scenario
- Annual maximum observations
- 11.0,25.0,18.0,40.0,32.0
- Descending maxima, rank and Weibull return periods (years)
- [[40,1,6],[32,2,3],[25,3,2],[18,4,1.5],[11,5,1.2]]
Calculation method
Calculation method
Descending maxima, rank and Weibull return periods (years)
Sort maxima descending; T=(n+1)/rank.
Symbols and units
- a
- Annual maximum observations
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Plotting positions, not an extreme-value flood frequency fit. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Plotting positions, not an extreme-value flood frequency fit.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
Background reading; this does not imply endorsement or independent review of SumFizz.