The history goes that ILRs are coldest in the bottom. This is not the case with VESTFROST (as here) ILRs. They are coldest in the top, the reason for that is that the ice-lining is in the upper part.
So, the storage code should be opposite for VESTFROST ILRs.
I did temperature monitoring, with data loggers, of this and have the supporting data, I am trying to attach, but it does not work. I can send to your e-mail
Technet-ILR.doc