108 Quadrat number
This field is used to identify the assessments of ozone injury at each single rectangle (quadrat).
Number the different rectangles (quadrats) progressively.
E.g., if 10 rectangles (quadrats) are assessed, this field is used to identify rectangles 1, 2, 3, …, 10.
If a rectangle is without any plant for ozone assessment (e.g. a gap, skidder trail, rock) the number of the rectangle will be submitted as well as country, plot, and date and the other fields will be empty but in the field species will be submitted the values "-8".