. Author manuscript; available in PMC: 2012 Oct 23.

Published in final edited form as: Ultrason Imaging. 2012 Jul;34(3):159–180. doi: 10.1177/0161734612455576

Table 4.

Angled Experimental Results

Medium	Literature-Predicted C_water, m/s	Literature-Predicted C_oil, m/s	Local Estimate between Targets, m/s	Error Relative to C_water, %	Standard Deviation of Local Error, %
Medium	Literature-Predicted C_water, m/s	Literature-Predicted C_oil, m/s	Meth 1/Meth 2/Meth 3	Meth 1/Meth 2/Meth 3	Meth 1/Meth 2/Meth 3
Water only (angle 16.2°)	1473.3	NA	1461.1/1458.1/1460.2	0.83/1.04/0.89	0.032/0.045/0.36
Water only (angle 32.3°)	1474.7	NA	1513.7/1449.0/1476.0	−2.64/1.74/−0.090	0.075/0.217/0.074
Castor oil on water (angle 11.3°)	1473.1	1514.5	1469.4/1465.0/1469.4	0.25/.55/.25	0.28/0.24/0.25
Castor oil on water (angle 19.0°)	1474.2	1513.5	1463.0/1458.0/1463.4	0.76/1.10/0.73	0.27/0.18/0.18

Meth 1 = ignore refraction; Meth 2 = select minimum value; Meth 3 = calculate minimum analytically. NA = Not applicable