Table 2. F values from the ANOVA analysis at different frequencies.
| Frequency | 0.6 THz | 0.8 THz | 1.0 THz | 1.2 THz | 1.4 THz |
|---|---|---|---|---|---|
| F value | 2.6 | 3.1 | 3.1 | 3.9 | 1.5 |
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