01596nam 2200445 450 991070269970332120150312162352.0(CKB)5470000002429187(OCoLC)904781888(EXLCZ)99547000000242918720150312j201404 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierComparison of the variations of sunspot number, number of sunspot groups, and sunspot area, 1875-2013 /Robert M. WilsonHuntsville, Alabama :National Aeronautics and Space Administration, Marshall Space Flight Center,April 2014.1 online resource (viii, 23 pages) illustrationsNASA/TP ;2014-218192Title from title screen (viewed March 12, 2015)."April 2014."Includes bibliographical references (pages 21-23).Sunspot cyclenasatSunspotsnasatError analysisnasatMinimanasatSunspot cycle.Sunspots.Error analysis.Minima.Wilson Robert M.302787George C. Marshall Space Flight Center,United States.National Aeronautics and Space Administration,GPOGPOBOOK9910702699703321Comparison of the variations of sunspot number, number of sunspot groups, and sunspot area, 1875-20133525947UNINA