Ratio     if  Frequency, Hz  ip  Slowness, s/m ip   Record 1/4-Wave Depth, mAvg. Shear Velocity, m/s
   0.77009   8        0.78125  12       0.00133    0      0       241               752
   0.64323  10        0.97656  15       0.00166    0      0       154               602
   0.41619  11         1.0742  19       0.00211    0      0       110               474
   0.37663  12         1.1718  21       0.00233    0      0       92                429
   0.36813  15         1.4648  23       0.00255    0      0       67                392
    0.4191  18         1.7578  24       0.00266    0      0       53                376
   0.32605  21         2.0507  26       0.00288    0      0       42                347
   0.25039  27         2.6367  27       0.00299    0      0       32                334
   0.40327  32          3.125  27       0.00299    0      0       27                334
   0.47029  34         3.3203  27       0.00299    0      0       25                334
   0.37175  38         3.7109  27       0.00299    0      0       23                334
    0.3807  44         4.2968  29       0.00322    0      0       18                311
   0.33439  62         6.0546  30       0.00333    0      0       12                300
   0.45014  70         6.8359  31       0.00344    0      0       11                291