Initial Reports, Volume 206 Ms 206IR-103 Chapter 3, Table T46. Well Seismic Tool summary. Stack number Depth (mbsf) Two-way traveltime (ms) Internal velocity (m/s) 12 294.6 5182.84 5753.81 11 334.6 5196.74 4779.04 10 374.6 5213.48 3640.59 9 409.7 5232.77 4355.58 8 444.6 5248.79 5013.1 7 479.6 5262.75 4271 6 519.6 5281.49 4974.98 5 569.6 5301.59 6049 4 609.6 5314.81 4556.19 3 660.1 5336.8 5408.73 2 699.6 5351.56 5247.6 1 728.6 5362.8 0