Graphical comparison of the data in Tables 1 and 5 for each of the four nuclides. In each panel the black points are the standard theoretical values of Pitrou et al. (2021), and the red points are the observed abundances. They are listed in Table 1. The magenta points show the best-fit depletion-only model discussed in Sect. 2, and the green, cyan, and blue points are the best fit in the Unification, Dilaton, and Clocks cases discussed in Table 5. The 1-σ uncertainties are depicted in all cases. The lithium-7 panel depicts both the cosmological and astrophysical (depleted) abundances; the latter and the helium-3 observed abundance are shown with dotted error bars to indicate that they are not cosmological.