| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Inula helenium | Plant | -- | -- | * | |
| Inula helenium | Rhizome | 9900.0 | 19400.0 | * | |
| Inula helenium | Shoot | -- | 13.0 | * | |
| Inula helenium | Essential Oil | -- | -- | * | |
| Inula helenium | Root Essent. Oil | -- | -- | * | |
| Inula helenium | Root | 1305.0 | 5215.0 | * |