χ2 values of P for all σ values and the 8 most occuring values of θ2:

θ2=0.000 θ2=0.464 θ2=0.785 θ2=1.107 θ2=1.571 θ2=2.034 θ2=2.356 θ2=2.678
σ=2 -2.446E+01 2.593E+00 2.603E+00 9.165E-01 1.972E+01 2.207E+00 4.985E+00 1.290E+00
σ=3 -4.130E+02 -2.207E+00 4.867E+00 -4.440E+00 2.138E+01 -1.725E+00 7.119E+00 -2.239E+00
σ=4 1.286E+01 6.490E+00 1.048E+01 3.317E+00 8.685E+00 3.995E+00 9.599E+00 5.749E+00
σ=5 8.193E+00 5.113E+00 1.239E+01 5.631E+00 6.296E+00 4.060E+00 1.227E+01 6.020E+00
σ=6 6.335E+00 2.697E+00 1.645E+01 2.647E+00 5.151E+00 2.310E+00 1.754E+01 2.942E+00
σ=7 5.406E+00 2.302E+00 9.135E+00 1.969E+00 4.527E+00 2.148E+00 8.175E+00 2.361E+00
σ=8 4.837E+00 2.205E+00 7.288E+00 1.688E+00 4.092E+00 2.213E+00 6.985E+00 2.201E+00
σ=9 4.373E+00 2.179E+00 6.552E+00 1.519E+00 3.736E+00 2.273E+00 6.718E+00 2.134E+00
σ=10 3.752E+00 2.155E+00 6.182E+00 1.383E+00 3.359E+00 2.299E+00 6.680E+00 2.052E+00
σ=11 3.221E+00 2.094E+00 5.820E+00 1.264E+00 3.065E+00 2.244E+00 6.543E+00 1.954E+00
σ=12 2.922E+00 2.034E+00 5.450E+00 1.166E+00 2.826E+00 2.130E+00 6.368E+00 1.892E+00
σ=13 2.762E+00 1.951E+00 5.080E+00 1.074E+00 2.560E+00 1.980E+00 6.173E+00 1.861E+00
σ=14 2.849E+00 1.870E+00 4.735E+00 1.031E+00 2.464E+00 1.856E+00 5.916E+00 1.861E+00
σ=15 3.073E+00 1.802E+00 4.449E+00 1.027E+00 2.453E+00 1.760E+00 5.654E+00 1.880E+00