Authors: Ulrich, Roger K, (UCLA Dept. of Phys. & Astro.), Boyden, John E.,(UCLA Dept. of Phys. & Astro.), Tran, Tham (UCLA Dept. of Phys. & Astro.)

Abstract The Mt. Wilson Observatory archive of observations of solar disk
magnetic fields, Doppler velocities and spectral line intensities is a resource
for the study of the sun’s state over a period from 1967 to 2013. Instrument
changes/upgrades during this time have to be taken into account in the interpretation
of this record. Portions of this record have been previously released.
This publication documents the data record in order to allow its independent
interpretation. The archive is available through two directory trees which can be
accessed at http://sha.stanford.edu/mwo/msm.html. Calibration of the observations
is impacted by the solar surface convective flows which produce offsets
to both the differential rotation and meridional circulation functions. The effects
of these offsets have been reduced in this and other publications by temporal
averaging.