| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Citrus limon | Fruit Essent. Oil | 512000.0 | 980000.0 | 1.3 | Jim Duke's personal files. |
| Citrus limon | Pericarp Essent. Oil | 512000.0 | 774000.0 | * | |
| Anethum graveolens | Essential Oil | 467000.0 | 628800.0 | 2.9 | * |
| Apium graveolens | Fruit Essent. Oil | 350000.0 | 706000.0 | 0.6 | * |
| Apium graveolens | Seed Essent. Oil | 350000.0 | 721600.0 | 2.1 | * |
| Citrus limon | Leaf Essent. Oil | 284000.0 | 754000.0 | 2.7 | * |
| Carum carvi | Essential Oil | 250000.0 | 500000.0 | 2.1 | * |
| Tagetes minuta | Fruit Essent. Oil | 213100.0 | 353200.0 | -0.3 | * |
| Tagetes minuta | Flower Essent. Oil | 166300.0 | 353200.0 | 0.7 | * |
| Piper nigrum | Fruit Essent. Oil | 130500.0 | 210600.0 | -0.7 | * |
| Canarium indicum | Essential Oil | 54100.0 | 135250.0 | 0.0 | * |
| Myristica fragrans | Essential Oil | 36000.0 | 44000.0 | -0.5 | * |
| Myristica fragrans | Seed Essent. Oil | 31000.0 | 119000.0 | -0.4 | * |
| Eucalyptus globulus | Leaf Essent. Oil | 31000.0 | 52000.0 | -0.4 | * |
| Foeniculum vulgare | Seed Essent. Oil | 25000.0 | 131000.0 | -0.3 | Jim Duke's personal files. |
| Mentha spicata | Essential Oil | 19000.0 | 363000.0 | 1.4 | * |
| Coriandrum sativum | Seed Essent. Oil | 15500.0 | 18950.0 | -0.8 | * |
| Petroselinum crispum | Fruit Essent. Oil | 10000.0 | 60100.0 | -1.1 | * |
| Salvia officinalis | Leaf Essent. Oil | 10000.0 | 36400.0 | -0.5 | * |
| Melaleuca alternifolia | Essential Oil | 9000.0 | 43000.0 | -0.5 | * |