38 butterfly diagram sunspots
Maunder diagrams of sunspots known as 'butterfly diagrams' (BD) have existed since 1901 and serve as a good illustration of the Sparer law (Gibson, 1973). The structure in a number of flares seen... This version of the sunspot butterfly diagram was constructed by the solar group at NASA Marshall Space Flight Center. The "butterfly" signature of sunspots is clearly visible at low latitudes. File:Sunspot butterfly diagram.svg. From Wikimedia Commons, the free media repository. Jump to navigation Jump to search. Butterfly diagram sunspots