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| Frequency HZ | 63 | 125 | 250 | 500 | 1000 | 2000 | 4000 | 8000 |
| Mean Attenuation DB | 16.2 | 15.7 | 17.1 | 25.6 | 32.7 | 34.3 | 31.8 | 32.6 |
| Standard Deviation DB | 4.3 | 3.9 | 1.7 | 3.2 | 3.2 | 3 | 2.9 | 3.9 |
| SNR=27dB; H=30dB; M=25dB; L=18dB | ||||||||


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