0.0 to      qgaus      expected

 0.50     0.090204     0.090204
 1.00     0.264241     0.264241
 1.50     0.442175     0.442175
 2.00     0.593994     0.593994
 2.50     0.712703     0.712703
 3.00     0.800852     0.800852
 3.50     0.864112     0.864112
 4.00     0.908422     0.908422
 4.50     0.938901     0.938901
 5.00     0.959572     0.959572