Product | Number of samples | Mean ± S.E | Range |
Fig | 30 | 1.9 ± 1.1a | |
Almond | 25 | 1.7 ± 1.2a | |
Hazelnut | 25 | 1.6 ± 1.4a | |
Walnut | 40 | 1.8 ± 1.5a | |
Pistachio | 40 | 1.5 ± 1.2a | |
Sunflower | 40 | 1.3 ± 1.2a | |