Table 2: Noise metric of experimental data.

0.8 GHz 1 GHz 1.2 GHz

Volunteer 1 24.7% 21.1% 31.0%
Volunteer 2 15.4% 15.4% 23.7%
Volunteer 3 27.8% 22.6% 30.0%
Volunteer 4 17.6% 18.8% 26.0%
Volunteer 5 22.2% 21.9% 33.0%