Did you even bother looking for the horizontal twist?
Well the data points are plotted that way on Chandler’s graph, and he even plotted a line through them. And that’s how it appears in the UAF draft report. Here’s the citation again:
Report page 108, PDF page 120,
http://ine.uaf.edu/media/222439/uaf_wtc7_draft_report_09-03-2019.pdf