Pekeris waveguide. 1.0 dB. N I T J 20 0 3 0 0 0 0 0 0 0 0 1500 0 0 0 1 0 100 1800 0 1.0 0 1.8 0 36 36 46 2 1 300 1E8 2048 1 800 0 3 20 0.5 20 80 12 10 0 100 12 20 40 70 6