b=1.800 P=24: |S(1)|/N = 0.9927
  xi=0.125  I(xi)=0.0201  I(xi+1)=0.0167  I(xi+2)=0.0419  form factor 2|1-e(xi)|^2/N... 0.0244
  xi=0.250  I(xi)=0.0654  I(xi+1)=0.0266  I(xi+2)=0.0372  form factor 2|1-e(xi)|^2/N... 0.0833
  xi=0.375  I(xi)=0.1188  I(xi+1)=0.0643  I(xi+2)=0.0411  form factor 2|1-e(xi)|^2/N... 0.1423
  xi=0.500  I(xi)=0.1627  I(xi+1)=0.1342  I(xi+2)=0.0935  form factor 2|1-e(xi)|^2/N... 0.1667
  xi=0.625  I(xi)=0.1792  I(xi+1)=0.2184  I(xi+2)=0.2192  form factor 2|1-e(xi)|^2/N... 0.1423
  xi=0.750  I(xi)=0.1542  I(xi+1)=0.2732  I(xi+2)=0.3870  form factor 2|1-e(xi)|^2/N... 0.0833
  xi=0.875  I(xi)=0.0890  I(xi+1)=0.2497  I(xi+2)=0.5042  form factor 2|1-e(xi)|^2/N... 0.0244
