No Thickness   Depth    Vp       Vs
       (m)       (m)    (m/s)    (m/s)
 1,    1.00,    1.00,  450.00,  180.00
 2,    2.00,    3.00,  920.00,  380.00
 3,    7.00,   10.00, 2280.00, 1140.00
 4,   30.00,   40.00, 2910.00, 1140.00
 5,   40.00,   80.00, 2910.00, 1290.00
 6,   -----,   -----, 2530.00, 1070.00