Template:Certification Table Entry/Sales/SpanishSinglesPeriod/doc
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This helper template calculates periods for Spanish singles certifications, as stated in Productores de Música de España#Certifications
It returns:
| Before November 2005 | Before April 2007 | Before 2009 | From 2009 |
|---|---|---|---|
| 1 | 2 | 3 | 4 |
Returns 0 if the data provided is not sufficient.