Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
English
⇄
Arabic
French
German
Italian
Japanese
Polish
Portuguese
Spanish
G
o
o
g
l
e
|
Forvo
|
+
twelve-month running-mean sunspot number
radio
gleitender zwölfmonatiger Mittelwert der Sonnenfleckenzahl
Add
|
Report an error
|
Get short URL
|
Language Selection Tips