If you are a graduate student staring at a table of 200 sieve samples, or a consultant who needs a quick classification for a report, is still the fastest route from raw data to interpreted sediment name. Just remember to test it on your version of Excel, and always – always – double-check the d50 against manual interpolation.
| Percentile | Phi (Φ) | Size (µm) | | :--- | :--- | :--- | | D5 (Very Coarse tail) | [Value] | [Value] | | D16 | [Value] | [Value] | | D50 (Median) | [Value] | [Value] | | D84 | [Value] | [Value] | | D95 (Fine tail) | [Value] | [Value] | gradistat v 9.1