MAGNETIC-FIELD OF THE SUN AS A STAR - THE MOUNT-WILSON OBSERVATORY CATALOG 1970-1982

Measurements of the mean magnetic field of tl-ie Sun (MMFS) seen as a star were regularly conducted at the Mount Wilson Observatory from 197 0 October through 1982 December. A listing is presented of all these d ata (2457 daily values) suitable for comparison with similar data of o ther observatories and for studies of magnetic variability and rotatio n of the Sun. The scatter-plot diagrams and power spectra of the Mount Wilson data and also of the total data 1968-1991 (collected from thre e observatories: Crimean Astrophysical Observatory, Mount Wilson Obser vatory, and Wilcox Solar Observatory) are also presented. Time variati ons of the MMFS connected with solar rotation at periods approximate t o 27-28 days and also an enigmatic 1 yr variation are briefly discusse d. The power spectrum of the 24 yr data set shows that the most signif icant and phase-coherent synodic periods of the MMFS variations are 26 .92 +/- 0.02 and 27.13 +/- 0.02 days (both are thought to be associate d with rotation of the large-scale surface magnetic field near equator of the Sun) and 28.13 +/- 0.02 days. It is suggested that the latter period reflects ''rigid'' rotation of the global magnetic field concen trated under the bottom of the solar convection zone. The arguments ar e given in favor of reality and high confidence level of major periodi cities exhibited by MMFS variations.