Reading/Web/Lazy loading of images and references on Thai Wikipedia

Thai Wikipedia, a medium sized wiki, was the second wiki to have both lazy loaded references and images enabled. It was deployed on 12th July 2016 at 4.14pm PST.

Sanity checking
To get a general sense of impact on performance after 19 days of the change being live we took a look at NavigationTiming results. Using the following SQL query, it was possible to take a database dump of all NavigationTiming events logged for 19 days preceding the change (from 23rd June) with 19 days following the change (until 1st August) This SQL query gave a sample of 32533 rows of data. With the result of the following query, using a Python script the following command was run python navtimingcsv.py thwiki.tsv 20160712001400 19