No worries. I will attempt to answer your question with what I think I know but I am by no means an expert at this stuff. I am basically doing what you said where I'm trying to line up the lines and dot of each color with the four boxes of each color and have all the lines intersect at the D65 white point. If someone that knows better sees that something is incorrect here please chime in because I don't want to spread inaccurate information and I'm here to learn as well .Thankyou. Sorry for the question, but how do we know what "Native" is supposed to be? if it's the native resolution of the panel (and this is somewhere between rec.709 and the theoretical rec.2020), what does "correcting" it involve? Is it getting the red on an imaginary line between rec.709 red and rec.2020 red? Repeat for all the others?
page 3 of your nice PDF - I assume shows a "after calibration" set of readings. Perhaps if we could see a "before" image it may be clearer?
The attached pdf has the results of my best attempt to calibrate using the Native color space and also the Custom color space calibration. The two rows to look at on the number charts are Delta E and delta luminance. It is my understanding that the closer to zero the better for these numbers. I'm sure there's more to it than that but this is probably considered a very basic calibration. Comparing the two charts and graphs can give you an idea of how "off" my best attempt with the Native color space was.
Oh, and the bigger triangle is supposed to be a representation of the range of DCI-P3 colors. This TV doesn't quite get there though.
I hope this helps.
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