Scoring system for fructification. (International Co-operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests (ICP Forests, 2010))
Link to this table.
|Score and class||Definition||Remark|
|Class 1.1: Absent||Fructification is absent or inconsiderable||Even reasonably lengthy observation of the crown with binoculars yields no signs of fruiting|
|Class 1.2: Scarce||Sporadic occurrence of fruiting||Not noticeable at first sight. It must be looked for on purpose with binoculars.|
|Class 2: Common||Fructification is such that it can be observed with the naked eye||The appearance of the tree is influenced but not dominated by fructification|
|Class 3: Abundant||Fructification is obvious and immediately meets the eye||Fruiting determines the tree's appearance|