No Thickness   Depth    Vp       Vs
       (m)       (m)    (m/s)    (m/s)
 1,    1.00,    1.00,  360.00,  140.00
 2,   19.00,   20.00, 1680.00,  230.00
 3,   12.00,   32.00, 1680.00,  410.00
 4,   48.00,   80.00, 2720.00, 1530.00
 5,   -----,   -----, 3470.00, 1730.00