Left panel: $\mu_B$ and $\mu_Q$ obtained with Thermal-FIST  in different centrality intervals. The centrality-correlated and -uncorrelated uncertainties are represented with error bars and ellipses, respectively. Right panel: $\mu_B$ extracted from data collected in Au--Au and Pb--Pb collisions at the AGS (E802, E866, E877, E895, E896, E917 Collaborations), SPS (NA44, NA49, NA47 Collaborations), RHIC (BRAHMS, PHENIX, STAR Collaboration), and LHC (ALICE Collaboration) as a function of the center-of-mass energy per nucleon--nucleon pair , and phenomenological parameterization of $\mu_B(\sqrt{s_{\mathrm{NN}}})$ . The inset shows more in detail the results obtained at the LHC .