CO2e emission of iphone 5s,5c,6?#environmental report?

https://www.apple.com/...pt2014.pdf
This is the official report introduced by apple, I'm wondering if the total CO2e output (65kg for 5s) is based on per unit of iphone 5s or total number of iphone 5s sold?

This is another website stating the CO2e emission of mobile phone:
http://www.ethicalconsumer.org/ethicalreports/mobilesreport/environment.aspx

Both of the figures differ quite a lots, anyone can help with this?

Only they would probably know that.

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