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What does this mark mean?
Hi,
I was wondering what the marks in this graph mean. Is this a statistical figure (mean etc.)? Anyone an idea?

Thanks for helping me!
Juergen
Hi,
I was wondering what the marks in this graph mean. Is this a statistical figure (mean etc.)? Anyone an idea?

Thanks for helping me!
Juergen
The line represents the "expected" value for that period.
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