No Thickness   Depth    Vp       Vs
       (m)       (m)    (m/s)    (m/s)
 1,    3.00,    3.00,  430.00,  240.00
 2,   13.00,   16.00, 1860.00,  400.00
 3,   66.00,   82.00, 2280.00,  990.00
 4,   66.00,  148.00, 3230.00, 1500.00
 5,   -----,   -----, 3230.00, 1810.00