These values reflects offset frequencies to the carrier frequency, and in relax is noted as '''"Spin-lock offset, the frequency of of the rf field"''' : $\mathbf{\omega_{rf}}$.
Relax needs input for $\mathbf{\omega_{rf}}$ in ppm, and during calculations converts to the rad/s, with the following function calls.
<source lang="python">
offsets[ei][si][mi][oi] = frequency_to_rad_per_s(frq=cdp.spin_lock_offset[id], B0=frq, isotope=spin.isotope)