Muon site in LaNiC2 (as presented in Fig. S6) can found in 'LaNiC2.xsf'. This file also includes the electrostatic potential (measured in
eV) as 3D volumetric data.

Files containing the density of states used to create Fig. S7 can be found in the 'dos' subdirectory. Files beginning 'LaNiC2_dos' contain
the DOS for the system without a muon (presenting in Fig. S7(a)), whereas those beginning 'LaNiC2_lowest' contain data for the system with
an implanted muon (Fig. S7(b)). The species and angular momentum channel included in each file is indicated in the filename.
The first column gives the energy (relative to the Fermi energy) and the second column gives the density of states in states per eV.