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sunspot
solplet
Last Update: 2014-11-14 Usage Frequency: 5 Quality: Reference: IATE
sunspot cycle
solpletcyklus
mean sunspot number
gennemsnitligt solpletantal
Last Update: 2014-11-14 Usage Frequency: 3 Quality: Reference: IATE
period of sunspot activity
periode for solpletaktivitet
eleven-year sunspot cycle
solpletcyklus på 11 år
12-month running mean sunspot number
middelsolpletantal i løbet af 12 måneder