IM-Rate data for Auckland subsoil class C Sa(2p0s)
    9            (2G10.3)      1.00
  0.004074  0.032189
  0.006043  0.013863
  0.009641  0.004463
  0.012641  0.002107
  0.016223  0.001026
  0.021784  0.000404
  0.026896  0.000201
  0.032768  0.000100
  0.042174  0.000040