Now 50.5 · above 70 on 15.0% of days · below 30 on 3.9%
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tech-v3 · Wilder's smoothing, at the conventional 14-day window — these indicators work partly BECAUSE everybody uses the same parameters, so retuning them to our own history would be curve-fitting dressed as improvement. 30 and 70 are convention rather than a finding: the share of days this asset has spent beyond each is printed below.
Now 50.5 · above 70 on 15.0% of days · below 30 on 3.9%
Every value plotted for a past date could have been computed on that date. Normalised series expand their window rather than scaling against the full history, so nothing here is drawn using information that did not exist yet — which is also why the early years of a normalised series are dropped rather than shown against a range of one.