Month

Angstrom-Prescott Err (%)

Allen Err (%)

Sabbagh Err (%)

January

3.080

10.634

7.663

February

−13.117

1.203

4.810

March

−24.563

−10.714

6.064

April

−28.133

−15.446

7.581

May

−17.467

−19.488

2.635

June

−12.379

−22.939

−7.667

July

−3.725

−13.289

−6.577

August

−0.478

−17.065

−11.451

September

−2.886

−7.701

−1.493

October

−5.668

0.541

12.200

November

2.898

7.263

13.184

December

8.750

21.212

17.500

Average

−7.807

−5.482

3.704