Table 2: Best-fit parameter values and $1\sigma$ errors for the BBN constraints on $\frac{\Delta \alpha}{\alpha_0}$ and $\eta _{\rm B}$ (in units of 10^-10).
Data $\eta_{\rm B} \pm \sigma \left[ 10^{-10}\right]$ $\frac{\Delta \alpha}{\alpha_0}\pm \sigma$ $\frac{\chi^2_{\rm min}}{N-2}$

$\ensuremath{{\rm D}} + \ensuremath{\null^4{\rm He}} + \ensuremath{\null^7{\rm Li}}$ $\rm 4.188_{-0.095}^{+0.098}$ $\rm -0.008_{-0.007}^{+0.004}$ 10.33

$\ensuremath{\null^4{\rm He}} + \ensuremath{\null^7{\rm Li}}$ $\rm 3.289_{-0.148}^{+0.135}$ $-0.051 \pm 0.009$ 1.00

$\ensuremath{{\rm D}} + \ensuremath{\null^7{\rm Li}}$ $\rm 7.362_{-0.491}^{+0.572}$ $0.165 \pm 0.012$ 1.00

$\ensuremath{{\rm D}} + \ensuremath{\null^4{\rm He}}$ $\rm 6.195_{-0.418}^{+0.443}$ $-0.019 \pm 0.008$ 1.00

**Table 2:** Best-fit parameter values and $1\sigma$ errors for the BBN constraints on $\frac{\Delta \alpha}{\alpha_0}$ and $\eta _{\rm B}$ (in units of 10^-10).
Data	$\eta_{\rm B} \pm \sigma \left[ 10^{-10}\right]$	$\frac{\Delta \alpha}{\alpha_0}\pm \sigma$	$\frac{\chi^2_{\rm min}}{N-2}$
$\ensuremath{{\rm D}} + \ensuremath{\null^4{\rm He}} + \ensuremath{\null^7{\rm Li}}$	$\rm 4.188_{-0.095}^{+0.098}$	$\rm -0.008_{-0.007}^{+0.004}$	10.33
$\ensuremath{\null^4{\rm He}} + \ensuremath{\null^7{\rm Li}}$	$\rm 3.289_{-0.148}^{+0.135}$	$-0.051 \pm 0.009$	1.00
$\ensuremath{{\rm D}} + \ensuremath{\null^7{\rm Li}}$	$\rm 7.362_{-0.491}^{+0.572}$	$0.165 \pm 0.012$	1.00
$\ensuremath{{\rm D}} + \ensuremath{\null^4{\rm He}}$	$\rm 6.195_{-0.418}^{+0.443}$	$-0.019 \pm 0.008$	1.00

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