Evolution of EM (full squares – Table 4; open squares – interpolated to dates of medium-resolution spectra) and parameters of He ii λ4686, Hβ, Hα and Raman-scattered O vi λ6825 lines along the 2015 outburst of AG Peg. The horizontal belts at the bottom left corners denote the average quantity of the parameter during the preceding quiescence. Fluxes (in erg cm-2 s-1) are listed in Table 6.
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