. Author manuscript; available in PMC: 2008 Sep 26.

Published in final edited form as: J Am Soc Mass Spectrom. 2008 Jan;19(1):96–102. doi: 10.1016/j.jasms.2007.10.020

Table 1.

The contrast and depth resolution for the top four interfaces of sample LB20 and LB12

Sample	1st Interface	2nd Interface	3rd Interface	4th Interface
LB20
Contrast	0.97	0.93	0.83	0.85
Δz	18 nm	25 nm	27 nm	30 nm
LB12
Contrast	0.65	0.6	0.55	0.27
Δz	19 nm	25 nm	22 nm	35 nm