0.00000 0.87843 1.00000 0.80000
0.25000 0.63922 1.00000 0.77647
0.50000 0.40000 1.00000 0.74902
0.75000 0.69804 0.90196 0.82745
1.00000 1.00000 0.80000 0.90196