Accompanying data for "Chiral superfluid helium-3 in the quasi-two-dimensional limit"

This dataset includes the measured values of the superfluid transition temperature and the energy gap of the A phase of superfluid helium-3 confined in a 80 nm high slab-shaped cavity with specular quasiparticle scattering boundary conditions. Also corresponding calculations of the suppression of the superfluid transition temperature with almost fully specular boundaries are included.