IM-Rate data for Christchurch subsoil class D Sa(2p0s)
    9            (2G10.3)      1.00
  0.132418  0.032189
  0.199690  0.013863
  0.315351  0.004463
  0.412010  0.002107
  0.521880  0.001026
  0.691260  0.000404
  0.833543  0.000201
  0.990417  0.000100
  1.212812  0.000040