  We prove that the $\mathbb{F}_p[[t]]$-standard Hausdorff spectrum of a
compact $\mathbb{F}_p[[t]]$-analytic group contains a real interval and that it
coincides with the full unit interval when the group is soluble. Moreover, we
show that the $\mathbb{F}_p[[t]]$-standard Hausdorff spectrum of classical
Chevalley groups over $\mathbb{F}_p[[t]]$ is not full, since 1 is an isolated
point thereof.
