Month

Angstrom-Prescott Err (%)

Allen Err (%)

Sabbagh Err (%)

January

−3.103

6.442

−13.401

February

−9.452

−3.185

−10.681

March

−8.754

−2.913

−5.300

April

−4.235

−3.925

−1.482

May

4.319

−3.628

−2.690

June

9.065

−7.576

−5.019

July

11.074

−3.554

−3.079

August

13.418

−9.262

−4.873

September

9.981

−5.778

−7.918

October

7.635

0.776

−7.708

November

−0.58

7.585

−9.871

December

0.081

14.894

−10.683

Average

2.454

−0.844

−6.892