Peak times of the simulated TRF and the difference of broadened TRFs from the ideal ones. (a) shows the peak times of the broadened TRFs and ideal ones. Thick and thin lines are the results with μ_a=0.01 and 0.05 mm⁻¹, respectively. The open and filled symbols denote 0.1 and 0.5 ns in the width of the instrumental response function, respectively. Solid lines denote the peak of the ideal response function. The dashed and broken lines fit the peaks of TRFs to the ideal peaks with a constant offset. The data with μ_a=0.01 mm ⁻¹ are plotted with an offset of 0.2 ns to avoid overlap of the curves in the figure. (b) shows the difference from the ideal curve. Each symbol shows the results of the simulation with the same parameters as in (a). The lines show the constant offsets.