Top: Estimated partial effects surface (left-hand panel), one-dimensional slices through the previous surface for the covariate Speed, $z1(tz)=zSpeed(tz)∈{3.2,4,5}$ (middle panel) and the latency $t−tz∈{1,4}$ (right panel) on the log-hazard scale. Bottom: the analogue for the covariate Dist, where the estimated one-dimensional partial effects are conditioned on the values $z2(tz)=zDist(tz)∈{3,500,4,800,7,000}$ and $t−tz∈{1,4}$⁠.