  For Riemannian metrics of constant positive curvature on a punctured sphere
with conic singularities at the punctures and co-axial monodromy of the
developing map, possible angles at the singularities are completely described.
This completes the recent result of Mondello and Panov. The related problem of
describing possible multiplicities of critical points of logarithmic potentials
of finitely many charges is also solved.
