File talk:Intcal 13 calibration curve.png
The gray line is using the Libby half-life of 5568 years rather than currently accepted actual half-life of 5730 years, as this is how "Conventional Radiocarbon Age" (CRA) is calculated.
The gray line is using the Libby half-life of 5568 years rather than currently accepted actual half-life of 5730 years, as this is how "Conventional Radiocarbon Age" (CRA) is calculated.
