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Table 4.
Constraints on Δα/α for the three scenarios considered, for various choices of primordial abundances used in the analysis.
| Abundances | Narrow | Broad | Clocks |
|---|---|---|---|
| 4He+D+7Li |
 ppm |
 ppm |
 ppm |
| 4He+D+3He |
 ppm |
 ppm |
 ppm |
| All four |
 ppm |
 ppm |
 ppm |
Notes. The listed values correspond to the best fit in each case and to the range of values within Δχ2 = 4 of it.
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