Table 1.

Time spent in minutes (Min) and percentage (%), and sleep angle’s mean value ($\overline{X}$) and standard deviation (${\sigma }_X$) for each sleep position and each patient. The time spent in minutes and percentage is also provided for the laying and standing conditions.

Subjects	Left				Supine				Right				Prone				Laying		Standing
	Min	%	$\overline{\mathit{X}}$	${\mathit{\sigma }}_{\mathit{X}}$	Min	%	$\overline{\mathit{X}}$	${\mathit{\sigma }}_{\mathit{X}}$	Min	%	$\overline{\mathit{X}}$	${\mathit{\sigma }}_{\mathit{X}}$	Min	%	$\overline{\mathit{X}}$	${\mathit{\sigma }}_{\mathit{X}}$	Min	%	Min	%
1	16.0	4.3	56.2	1.1	210.5	56.7	94.6	9.2	142.4	38.4	157.1	4.3	2.3	0.6	−85.6	1.3	371.2	94.1	23.3	5.9
2	29.2	11.0	31.0	2.9	147.8	55.5	105.7	8.8	89.6	33.6	129.6	4.4	-	-	-	-	266.6	99.0	2.6	1.0
3	159.2	47.7	22.1	11.6	152.4	45.7	98.0	12.2	22.0	6.6	−173.1	16.1	-	-	-	-	333.6	100.0	-	0.0
4	-	-	-	-	114.5	36.1	112.4	1.6	202.6	63.9	161.4	6.2	-	-	-	-	317.1	100.0	-	0.0
5	87.3	30.7	59.2	1.2	145.4	51.1	85.7	18.2	51.9	18.2	157.9	2.4	-	-	-	-	284.6	100.0	-	0.0
6	59.4	19.1	5.6	5.0	90.6	29.1	97.4	4.2	46.9	15.1	175.5	20.7	114.4	36.8	−97.8	3.1	311.3	99.7	0.8	0.3
7	-	-	-	-	177.1	56.1	99.0	8.7	138.7	43.9	170.2	9.1	-	-	-	-	315.8	99.7	0.9	0.3
8	-	-	-	-	72.8	23.4	102.7	2.1	238.6	76.6	161.3	7.4	-	-	-	-	311.4	100.0	-	0.0
9	227.8	42.3	40.7	10.5	176.0	32.7	98.8	14.6	134.1	24.9	173.8	13.3	-	-	-	-	537.9	99.2	4.5	0.8
10	3.5	1.1	52.7	8.0	290.0	95.2	86.2	7.3	11.2	3.7	162.0	27.3	-	-	-	-	304.7	100.0	-	0.0
11	97.8	21.6	33.7	4.2	198.5	43.9	98.2	7.9	155.8	34.5	172.0	7.5	-	-	-	-	452.1	98.1	8.8	1.9
12	-	-	-	-	335.7	94.4	95.1	4.1	19.9	5.6	125.5	2.6	-	-	-	-	355.6	99.1	3.3	0.9
13	24.4	7.5	58.8	0.8	293.3	90.1	85.2	13.6	7.7	2.4	128.3	0.3	-	-	-	-	325.4	99.0	3.2	1.0
14	42.8	12.9	-22.1	14.5	29.0	8.7	86.5	5.0	185.6	55.8	174.2	22.2	75.4	22.7	−115.0	21.4	332.8	98.7	4.3	1.3
15	113.3	37.6	18.5	12.1	98.1	32.6	91.9	9.8	89.8	29.8	129.2	0.8	-	-	-	-	301.2	100.0	0.0	0.0
16	127.5	27.2	6.6	8.4	177.8	37.9	86.4	8.1	163.7	34.9	147.9	15.6	-	-	-	-	469.0	98.2	8.7	1.8
17	103.9	24.1	20.5	5.4	91.9	21.3	87.2	7.4	235.5	54.6	161.8	5.1	-	-	-	-	431.3	99.2	3.3	0.8
Total	1092.1	18.1	26.6	20.7	2801.4	46.5	94.0	12.2	1936.0	32.2	160.6	17.5	192.1	3.2	−104.4	16.1	6021.6	99.0	63.7	1.0