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. 2005 Nov 8;3(7):319–331. doi: 10.1098/rsif.2005.0101

Table 2.

The chosen observables, defined using the special points from figure 2. (The (time, value) pair of a point Y is denoted as (tY, CY).)

name symbol definition
period Π tE−tY
fraction rising Ψ (tX−tN)/(tE−tY)
maximum M CX
minimum N CN