HAZEL fit (orange) of He I triplet observations at μ = 1 (black dashed). The rest velocities of the red and blue components are marked with vertical lines in the respective colors. Basic information and the best-fit parameters are given in the box at the upper-left corner. These include the heliocentric angle, θ, the Doppler velocity, v, the Doppler width, Δv, the optical depth, τ, and the quality of fit, χ².