4 , channel number
Number of data points:
23
Frequency (GHz)   Filter response
      177.600000       0.013630
      177.700000       0.077241
      177.800000       0.209479
      177.900000       0.512163
      178.000000       1.000000
      178.100000       0.868925
      178.200000       0.597745
      178.300000       0.484698
      178.400000       0.599802
      178.500000       0.689849
      178.600000       0.709365
      178.700000       0.522252
      178.800000       0.429726
      178.900000       0.235731
      179.000000       0.206102
      179.100000       0.185913
      179.200000       0.142087
      179.300000       0.145219
      179.400000       0.141490
      179.500000       0.077191
      179.600000       0.060831
      179.700000       0.039591
      179.800000       0.000000