Month

Angstrom-Prescott Err (%)

Allen Err (%)

Sabbagh Err (%)

January

4.478

14.712

−1.007

February

−10.204

−0.692

−5.881

March

−16.710

−7.263

−0.582

April

−19.872

−14.188

3.091

May

−19.276

−18.22

1.563

June

−16.039

−20.470

−0.926

July

−6.829

−17.148

−1.074

August

−0.811

−20.635

−5.961

September

−4.613

−13.249

−2.054

October

−3.277

−2.588

4.739

November

4.090

9.261

6.360

December

11.708

20.576

6.008

Average

−6.446

−5.825

0.356