| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Elettaria cardamomum | Seed Essent. Oil | 44000.0 | 448400.0 | 2.1 | * |
| Pinus sylvestris | Leaf Essent. Oil | 6500.0 | 167000.0 | 2.5 | * |
| Ferula assa-foetida | Seed Essent. Oil | -- | 127100.0 | 0.1 | * |
| Citrus limon | Leaf Essent. Oil | 4000.0 | 125000.0 | 1.7 | Jim Duke's personal files. |
| Vitis vinifera | Leaf Essent. Oil | -- | 108000.0 | 1.3 | * |
| Laurus nobilis | Leaf Essent. Oil | 4000.0 | 92700.0 | 1.0 | * |
| Anethum graveolens | Essential Oil | -- | 83800.0 | 2.9 | * |
| Myristica fragrans | Seed Essent. Oil | 50000.0 | 77000.0 | -0.2 | * |
| Valeriana officinalis | Leaf Essent. Oil | 9500.0 | 75400.0 | 0.7 | * |
| Citrus limon | Pericarp Essent. Oil | 4000.0 | 73000.0 | Jim Duke's personal files. | |
| Apium graveolens | Root Essent. Oil | -- | 69000.0 | 1.0 | * |
| Laurus nobilis | Fruit Essent. Oil | -- | 58500.0 | 1.8 | * |
| Eucalyptus globulus | Leaf Essent. Oil | 29000.0 | 58000.0 | 0.3 | * |
| Origanum majorana | Leaf Essent. Oil | -- | 49000.0 | 0.1 | * |
| Melaleuca alternifolia | Essential Oil | 25000.0 | 31000.0 | 0.6 | * |
| Melaleuca alternifolia | Leaf Essent. Oil | -- | 29000.0 | -0.3 | * |
| Boswellia sacra | Essential Oil | -- | 29000.0 | 0.5 | Wang, W., Zhu, Y. X., Liu, L. Z., Ling, D. K., Qin, X. L., Tian, J. G. 1993. Analysis of the Chemical Constitutents of Essential Oil of Boswellia carterii Birdwood from Somali. Yaowu Fenxi Zazhi 13 3: 170-173. |
| Elettaria cardamomum | Fruit Essent. Oil | 17000.0 | 28000.0 | 0.3 | * |
| Rosmarinus officinalis | Leaf Essent. Oil | -- | 24000.0 | -0.4 | * |
| Ocimum basilicum | Essential Oil | 6700.0 | 23900.0 | 0.3 | * |