Originally Posted by ffgap (Post 36640910)

From reading it in the German original, it seems fairly clear it is EUR 10.50 per calendar day. There is a reduced fee of EUR 10.50 if you store it overnight but for no more than 10 hours total. I assume this is meant as a tiny favor to customers forced to do a quick overnight in FRA due to IRROPS in conjunction with the ban on night flights.