The atlas of the Third Solar Spectrum (SS3) represents the ratio between the intensity spectrum at different distances from the solar limb and the intensity spectrum at disk center (µ = 1.0), both in units of the intensity of the local continuum level. The observed positions of the measurements cover 9 different µ values along the solar axis ranging from 0.1 to 0.9 in step of 0.1, where µ=cosθ is the cosine of the heliocentric angle θ. The current version of the atlas covers the range 4384- 6610 Å. In the PDF file, the first plot represents the spectrum at the center of the solar disk, recorded at IRSOL. The next 9 plots represent the 3rd solar spectrum for µ=0.1, µ=0.2, µ=0.3, …, µ=0.9 Columns of the CSV file: WL: Wavelength, 4384-6610 Å IC: I/Ic at disc center RMU01: limb / disk-center ratio at µ=0.1 RMU02: limb / disk-center ratio at µ=0.2 … … RMU09: limb / disk-center ratio at µ=0.9

{"references": ["R. Ramelli, M. Setzer, M. Engelhard, M. Bianda, F. Paglia, J. O. Stenflo, G. K\u00fcveler, R. Plewe, \"Atlas of the solar intensity spectrum and its center to limb variation\", 2019, ASP-Conference Series, 526, 287", "arXiv:1708.03284"]}