Dear Yousef,
WHO has published a total of 16 technical supplements toWHO Technical Report Series, No. 961, 2011 (Annex 9. Model guidance for the storage and transport of time- and temperature–sensitive pharmaceutical products) in May 2015.
And technical Supplement #8 is on temperature mapping of storage areas. Here is the link to download:http://www.who.int/medicines/areas/quality_safety/quality_assurance/supplement_8.pdf?ua=1
The other technical supplements can be found on the following page:http://www.who.int/medicines/areas/quality_safety/quality_assurance/distribution/en/You need to scrol down toTechnical supplements to WHO Technical Report Series, No. 961, 2011 to see the separate links to all technical supplements.
Hope you find this helpful.
Cheers
Umit Kartoglu
WHO Geneva