Table 1.

Elevation signed error and unsigned error (in degree) for each encoding and target elevation, before, and after the familiarization session.

Encoding	Target elevation (degree)	Elevation signed error (degree) Mean ±standard deviation		Elevation unsigned error (degree) Mean ±standard deviation
		Before familiarization	After familiarization	Before familiarization	After familiarization
Monotonic	+25	−26.71 ± 41.40	−13.21 ± 20.02	37.79 ± 31.55	18.55 ± 15.17
	+12.5	−28.09 ± 33.09	−16.55 ± 22.28	33.45 ± 27.62	21.99 ± 16.89
	0	−18.83 ± 36.41	−11.94 ± 22.73	31.63 ± 26.01	19.60 ± 16.55
	−12.5	−15.14 ± 34.95	−13.23 ± 24.95	27.30 ± 26.50	20.73 ± 19.14
	−25	−8.82 ± 34.34	−15.81 ± 15.18	27.51 ± 22.29	17.89 ± 21.65
Harmonic	+25	−17.66 ± 47.39	−13.73 ± 26.16	36.66 ± 34.76	23.03 ± 18.45
	+12.5	−7.18 ± 45.40	−6.61 ± 26.46	33.41 ± 31.47	20.73 ± 17.67
	0	−5.68 ± 45.71	−10.28 ± 28.07	32.91 ± 32.14	24.06 ± 17.67
	−12.5	−1.10 ± 48.75	−16.43 ± 21.80	33.44 ± 35.40	22.23 ± 15.81
	−25	2.99 ± 48.76	−15.85 ± 16.08	34.28 ± 34.72	18.44 ± 13.01
Noise (Monotonic group)	+25	−42.69 ± 52.91	−33.92 ± 27.00	56.49 ± 37.73	37.54 ± 21.64
	+12.5	−32.93 ± 45.45	−23.24 ± 23.54	43.63 ± 35.23	28.00 ± 17.56
	0	−25.49 ± 43.51	−12.98 ± 24.78	36.61 ± 34.62	23.09 ± 15.73
	−12.5	−20.61 ± 43.35	−7.09 ± 22.23	32.93 ± 34.88	19.02 ± 13.46
	−25	−8.40 ± 47.90	3.11 ± 22.32	31.30 ± 37.15	16.86 ± 14.90
Noise (Harmonic group)	+25	−34.74 ± 46.47	−33.67 ± 28.35	47.86 ± 32.71	36.96 ± 23.87
	+12.5	−24.89 ± 45.12	−21.25 ± 27.08	40.59 ± 31.66	27.87 ± 20.16
	0	−15.68 ± 42.71	−12.20 ± 25.02	32.41 ± 31.87	22.15 ± 16.81
	−12.5	−7.03 ± 44.28	−3.40 ± 25.66	28.84 ± 34.27	19.68 ± 16.76
	−25	0.69 ± 43.84	8.72 ± 25.46	27.84 ± 33.81	20.10 ± 17.85