Earth-scattering induced modulation data for low-threshold dark matter experiments

Dark matter particles with sufficiently large cross sections can interact
with the bulk matter of the Earth and scatter before reaching a detector.
This would induce a modulation signal with the period of a sidereal
day.  We calculate these distorted velocity distributions for
sub-GeV dark matter particles that interact with a heavy or ultralight
dark photon mediators in silicon, xenon, and argon-based detectors. This
data set consists of the calculated distorted velocity distributions, as
well as the modulated rates used in our study. This data set was used to
investigate the properties of a modulation signal, as well as provide
projected sensitivities for experiments searching for this effect. We find
that searching for a modulation signal can probe new regions of parameter
space in regions where experiments typically have been limited by
backgrounds.