Imperial Advanced Placement (AP) test requirement for non-USA diploma

Does anyone know what is Imperial's requirement for the number of AP exams, for a student applying with AP exam results but with a non-USA diploma? The website says "Minimum of 3-4 AP tests with Grades of 5 (see course pages for required subjects). Expected to be taken alongside a relevant high school diploma. Where sat independently, departments will seek additional AP tests 4-6."I took six AP tests (all 5's, including Calculus, two Physics, and three other subjects), though my diploma is a non-USA diploma that is not recognized for entry by itself by ICL.1. Does anyone know what does "additional AP tests 4-6" means; is this 4-6 AP tests total, or 7-10 AP tests total?2. Can a "relevant high school diploma" be any high school diploma, or does this only refer to a US diploma, or any other recognized one?