Recording parameters for the study of trees in Oslo center.
| Parameter | Score | Description |
|---|---|---|
| general impression | 0 | dead |
| 5 | moderate vigor | |
| 9 | excellent vigor | |
| leaf necrosis | 0 | no leaf injury |
| 9 | severe injury on all leaves | |
| attack by insects and/or mites | 0 | no attack |
| 9 | whole crown affected | |
| dieback of twigs and branches | 0 | no dieback |
| 9 | whole crown dead | |
| stem injury | 0 | no visible injury |
| 9 | extensive and Dotentiallv lethal iniurv |