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Table 3

Parameters of the fit function (see Eq. (7)) to obtain the electron density from the FWHM.

Line p a b T c T m

He I 7281 0.973601 22.786715 0.118086 42124 539 893
He I 3889 0.980886 23.411952 0.089655 18807 293 037
He I 5876 0.988943 23.287156 0.083064 11648 132 390
He I 7065 0.983379 23.093489 0.076227 100 848 171 832

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