Optimal values of α0, β0, α1, β1, α2, β2 for the 24 most occuring values of θ2:

θ2 α0 β0 α1 β1 α2 β2
0.000 1.623 2.628 3.197 3.336 2.092 2.274
0.245 1.579 2.933 3.327 3.526 2.277 2.171
0.322 1.555 3.080 3.325 3.525 2.320 2.172
0.464 1.519 3.325 3.307 3.501 2.383 2.204
0.588 1.505 3.556 3.299 3.458 2.426 2.233
0.644 1.505 3.647 3.312 3.457 2.453 2.236
0.785 1.528 3.771 3.302 3.450 2.456 2.252
0.927 1.590 3.573 3.313 3.491 2.439 2.231
0.983 1.624 3.462 3.314 3.496 2.413 2.219
1.107 1.724 3.175 3.357 3.542 2.370 2.173
1.249 1.880 2.839 3.413 3.545 2.289 2.138
1.326 1.981 2.637 3.424 3.513 2.226 2.148
1.571 2.210 2.181 3.267 3.171 1.978 2.313
1.816 1.972 2.663 3.401 3.499 2.211 2.157
1.893 1.872 2.872 3.395 3.538 2.277 2.141
2.034 1.718 3.207 3.358 3.545 2.371 2.161
2.159 1.619 3.480 3.319 3.503 2.418 2.204
2.214 1.585 3.584 3.316 3.498 2.441 2.220
2.356 1.522 3.767 3.293 3.456 2.448 2.253
2.498 1.496 3.656 3.269 3.440 2.422 2.257
2.554 1.495 3.570 3.260 3.428 2.400 2.248
2.678 1.506 3.351 3.288 3.471 2.382 2.203
2.820 1.540 3.116 3.319 3.503 2.334 2.163
2.897 1.564 2.968 3.316 3.505 2.287 2.168