Time-series of hourly epithermal neutron intensity estimated from measurements of the bare neutron detector and/or the moderated neutron detector. For all three field sites, the data are collected at ground level (i.e. 1.5 m above the ground surface). The datasets are used to estimate soil moisture using the standard N0-calibration function and site-specific conversion functions determined based on neutron transport modeling (MCNP6). The soil moisture estimates are presented as daily moving averages.