Table 1.

Root Mean Square Noise on 100% Lines over the 4600- to 4400-cm^-1 Spectral Range

	Rat 1				Rat 2
Slice	Air		Tissue		Air		Tissue
	Meana	RSDb	Mean	RSD	Mean	RSD	Mean	RSD
1	31 ± 4	14%	922 ± 61	6.6%	30 ± 1	3.3%	830 ± 20	2.4%
2	31 ± 6	20%	640 ± 130	20%	34 ± 1	2.9%	448 ± 32	7.1%
3	33 ± 5	15%	703 ± 37	5.3%	31 ± 1	3.2%	569 ± 28	4.9%
4	30 ± 4	14%	625 ± 8	1.3%	32 ± 4	12%	911 ± 44	4.8%

	Rat 3				Rat 4
Slice	Air		Tissue		Air		Tissue
	Mean	RSD	Mean	RSD	Mean	RSD	Mean	RSD
1	42 ± 8	19%	1040 ± 55	5.3%	52 ± 5	9.6%	1095 ± 65	5.9%
2	41 ± 8	19%	1090 ± 40	3.7%	49 ± 8	16%	1470 ± 49	3.3%
3	32 ± 4	12%	792 ± 23	2.9%	48 ± 5	10%	418 ± 25	6.0%
4	44 ± 6	14%	1130 ± 49	4.0%	47 ± 2	4.2%	1475 ± 76	5.2%

^aMean ± standard deviation (2 degrees of freedom for air, 12 degrees of freedom for tissue).

^bRelative standard deviation.