2θ_m

a₀

a₁

a₂

a₃

0.1

1.0330

−0.9178

0.7980

−0.8535

0.25

1.0330

−0.9176

0.7675

−0.6719

0.5

1.0320

−0.9190

0.7567

−0.5892

1.0

1.0320

−0.9254

0.7484

−0.5362

1.5

1.0330

−0.9331

0.7300

−0.6529

2.0

1.0320

−0.9359

0.6748

−0.5453