| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Coriandrum sativum | Fruit | 12.0 | 153.0 | 1.0 | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. |
| Juniperus communis | Fruit | 1.0 | 6.0 | -1.0 | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. |
| Origanum majorana | Plant | -- | -- | Lawrence, B.M., Essential Oils 1976-1977, Essential Oils 1978, Essential Oils 1979-1980. | |
| Coriandrum sativum | Essential Oil | -- | -- | * | |
| Angelica archangelica | Root Essent. Oil | -- | -- | * | |
| Origanum majorana | Essential Oil | -- | -- | * | |
| Zingiber officinale | Rhizome Essent. Oil | -- | -- | * | |
| Angelica archangelica | Root | -- | -- | * | |
| Zingiber officinale | Rhizome | -- | -- | * | |
| Iris x germanica | Rhizome | -- | -- | * |