log₁₀(FAP) for each instrumental variation correction of HD 158259 RVs. On the y-axis, we show the four different corrections: the published correction, the master constant developed by Heidari et al. (2024), the new GP master constant, and raw data with the GP noise model. Coloured stars represent the FAPs, and each planet has a colour: yellow stars show planet b, pink stars show planet c, blue stars show planet d, green stars show planet e, orange stars show planet f, and purple stars show planet g.