Weighted scoring for continuous parameters.
| Parameter | Average value ± SDa | 1 SD | 2 SD | 3 SD | >3 SD |
|---|---|---|---|---|---|
| Molar mass (g per mole) | 317 ± 88 | 1.5 | 1.0 | 0.5 | −1.0 |
| Aromatic atoms (%) | 25 ± 12 | 1.5 | 1.0 | 0.5 | −1.0 |
| PSA (Å2) | 72 ± 39 | 1.5 | 1.0 | 0.5 | −1.0 |
| log D | 2.2 ± 2.4 | 1.5 | 1.0 | 0.5 | −1.0 |
| log S | −3.5 ± 1 | 1.5 | 1.0 | 0.5 | −1.0 |
| log P | 2.9 ± 1.5 | 3.0 | 2.0 | 1.0 | −1.0 |
a
The score given is based on being within 1, 2, 3 or >3 standard deviations (SD) from the average value (for 360 commercial herbicides). Note that the log P score is weighted differently.