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Symptom frequency over time indicates the number of years with symptoms over the 6 or 5 years before transplantation.
| Plant | Year of Transplantation | Symptom Frequency over Time (No. of Years) | Duration of Leaf Symptoms (Weeks) prior to the Moment of the Experiment |
|---|---|---|---|
| A1 | 2018 | 0/6 | 0 |
| A2 | 2018 | 0/6 | 0 |
| S1 | 2018 | 4/6 | 2 |
| S2 | 2018 | 6/6 | 4 |
| S3 | 2018 | 5/6 | 6 |
| S4 | 2017 | 5/5 | 5 |
