Hi Analytics team,
Quick question: Does the Clickstream data https://dumps.wikimedia.org/other/clickstream/readme.html lump together *mobile and desktop?* It seems to be hinted at here https://meta.wikimedia.org/wiki/Research:Wikipedia_clickstream, but it's not mentioned explicitly. It just says that the 2015 data is for desktop only, which seems to imply that after that it's desktop + mobile.
Also, I was wondering if anyone has any insights into what might cause *referrers to be empty?* I tried googling, but the issue is clouded in mystery and seems to depend a lot on browser and website specificities. Any insights (small or big) would be appreciated!
Thanks a lot! Bob