How can this input address have multiple values at the same time?
What's happening in this transaction is that the same address (1AhN6rPdrMuKBGFDKR1k9A8SCLYaNgXhty) is claiming different outputs. You can see which output it's claiming by clicking on the "Output" link available for each input. 

This is a common scenario where a person has their coins spread across several addresses.