items and the peq db

[eski2]

I've noticed some items are invalid when i was testing out a spreadsheet to weight the value of an item. For example
Name id aagi ac
Trexxt the White 38557 35 300

This is the highest ac item i can find, and i was trying to see if AC was about equal to the value of a stat, about twice as much (my opinion) or more.

But #si 38557 gives you something weird, and looking through the rows and columns of the items table i can't see why... i thought at first it must be to do with the NULL values in 'serialized' but they are everywhere. #si 51206 makes 1 lb. Cragbeast Meat as expected and i can't see anything in particular to indicate why this item is ok and the other one isn't.

Can anyone help me with this one?