Table 1.

Model Fits for Total Tuff Cone Volumes V_tc (in km³) From Full Time Series of All 16 DEMs

Model	Intercept	Slope	R 2	Lifetime
Linear	0.0477	−0.00256	0.84	18.7 years
Log	0.0444	−0.00195	0.93	a
Piecewise linear—first segment	0.0488	−0.00451		—
Piecewise linear—second segment	0.0449	−0.00108	0.97	41.7 years

Note. Time is in years, starting at 1 January 2015. For the piecewise linear model, values are provided for each segment, with the optimal breakpoint found at 16 February 2016. The R ² goodness of fit values listed is the overall R ² of both temporal segments (see also Figure S1).

^aThe logarithmic model does not converge to a zero‐crossing (end of island state) given the present data and its uncertainties (Table S1).