Need help with pulling specific data in a table on a website.

Hey All,
 
I'm creating a script that is tracking reference numbers on a website.  The information when tracked comes back in an array.  It's pulling the references from an Excel sheet already and I want to be able to pull certain columns from the table and enter into the field.  I created a loop that is working fine right now and just having a hard time to figure out how to select a certain column in a certain row.  See my example for the estimated available field below
 
Would I write the table to an array?  And how would I be able to determine the column or location in the array so that I could write it back to my excel document?

I've got everything working fine except for this part.
 
Sorry I'm pretty new to programming in general so thanks for the help!