Table 2.

Results of the calibration session.

User	Frequency band (Hz)	Minimum error (%)
P1	7–17	8.81
P2	13–16	31.31
P3	12–14	18.44
P4	12–17	17.94
P5	5–15	20.94
P6	11–15	22.38
P7	10–14	22.13
P8	10–16	23.06
P9	7–10	30.31
P10	11–16	35.19
P11	9–12	25.06
P12	7–12	15.81
P13	5–12	35.44
P14	10–14	11.63
P15	10–17	39.06
Mean	9.27 ± 2.52 to 15.47 ± 2.17	23.7 ± 8.68