!
!   Sorted calibration points from: a.fre
!
  318238.090    0.049550
  318976.560  -14.445670
  319157.187  -20.762220
  319293.373  -16.319280
  319604.034  -20.073230
  319718.630  -19.927980
  319811.503  -23.710820
  319886.686  -22.765360
  320110.262  -25.966050
  320496.415  -20.722570
  320615.890  -18.694610
  320723.518  -18.494150
  320989.907  -19.362340
  321073.174  -20.620170
  321182.232  -21.127270
  321348.563  -18.396900
  321440.535  -20.006910
  321806.853  -24.237740
  322313.619  -19.881890
  322390.769  -16.657710
  322495.360  -19.945510
  323036.020   -9.560200
  323103.445   -9.571480
  323531.197   -4.781790
  323695.382    2.142620
  323806.693   -0.001740