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Combination of all figure 4 results with the x-axis non-dimensionalized by the perfusion time constant τbl. When estimating IHR, β, and α < 7% error is possible using any of the Taylor series approximations if tfit/τbl < 1. When estimating w, a 3rd order Taylor series approximation and tfit/τbl < 1 results in errors <5%. See figure 4 for color legends.
