Numerically calculated example values for the finite-amplitude correction factor , with sound propagation parameters from Table 1 and 1000 W power setting for both calibration at range r_cal and s_v measurement at range r. The calibration range is indicated with a mark on each curve. Logarithmic scale, with corresponding ratios shown on the right-hand ordinate axis. (a) 120 kHz, (b) 200 kHz.