Author(s), and dataset

Number of points

I₀

θ_c

A

B

C

D

Dove [ 19 ], Do1852

14

−320.57

1.5636

1438.28

1.1416

0.8725

0.8819

Forbes [ 23 ], Fo1859

14

−270.56

1.5671

957.38

1.8252

0.7443

0.7501

Ferrel [ 12 ], Fe1877

15

−310.94

1.5710

1186.28

1.5531

0.8301

0.8321

Spitaler [ 10 ], Sp1885

“Complete dataset”

33

−327.05

1.5543

1454.92

1.1475

0.8728

0.8993

Spitaler [ 10 ], Sp1885

“Reduced dataset”

19

−340.78

1.5502

1764.13

0.7686

0.9096

0.9359

Batchelder [ 11 ],

Ba1895

14

−317.30

1.5606

1429.10

1.1394

0.8664

0.8802