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  Indian J Med Microbiol
 

Figure 9: The attenuation coefficient versus frequency of the phantom with the optimum recipe (6% agar and 4% silicon dioxide). Uncertainty bars represent standard deviations and the dashed line represents linear regression fitting (R2 = 0.9776)

Figure 9: The attenuation coefficient versus frequency of the phantom with the optimum recipe (6% agar and 4% silicon dioxide). Uncertainty bars represent standard deviations and the dashed line represents linear regression fitting (<i>R</i><sup>2</sup> = 0.9776)