WMKT/AMKT Spreadsheet and Validation

Forgive me if this topic has been previously covered; I looked around a good bit, but didn’t didn’t run into anything on the subject.

I’m curious as to whether anyone has a reliable xls WMKT and/or AMKT spreadsheet that has successfully navigated the validation waters. My company is currently in a limbo period (until permanent monitoring is installed) in which we will have to manually enter collected warehouse temperature data and calculate (via xls spreadsheet), WMKT and AMKT. Of course, the raw calculations are not a big deal, but, as a third party will be actually handle the entering of raw data into the working xls spreadsheet, I’m wondering how the avoidance of possible data entry errors was accounted for in both the actual xls spreadsheet, and in the validation write-up.

If anyone has an example of such a spreadsheet, and would like to share, it would be most appreciated.

If someone can recommend a buy-ware (or free, or share-ware), that would be great as well.

Thanks in advance,