IM-Rate data for Wellington Sa(1p0s)
    9            (2G10.3)      1.00
  0.134912  0.032189
  0.248005  0.013863
  0.564394  0.004463
  0.990938  0.002107
  1.519332  0.001026
  2.274539  0.000404
  2.887997  0.000201
  3.545630  0.000100
  4.483798  0.000040