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Table 1

Atomic parameters of the spectral lines (Nave et al. 1994; Radziemski, Jr. & Andrew 1965).

Line λ (nm) Exc pot (eV) g-effective # Maps

Fe i 1564.852 5.43 3.00 160
Fe i 1089.630 3.07 1.50 16
Si i 1082.709 4.95 1.50 180
Fe i 1078.300 3.11 1.50 18

Notes. The number of sunspot maps in each wavelength band is shown in the right column.

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