Technofreak:
This dosen't give much confidence. You also have to ask where the graph (graphic) came from.
Why all the ducking and diving suggestions being proposed to explain it rather than just telling the truth, whatever that may be?
refer to my covid code words compilation https://www.geekzone.co.nz/forums.asp?forumid=161&topicid=265423&page_no=1436#2744310