Fig 2. Clock standard deviation scale operators.

The two operators above propose a clock standard deviation σ → σ′. Then, either the new quantiles are such that the rates remain constant (“New quantiles”, above) or the new rates are such that the quantiles remain constant (“New rates”). In the real parameterisation, these two operators are known as Scale and CisScale, respectively. Whereas, in quant, they are known as CisScale and Scale.