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Table 1.

Notation adopted in the present paper.

col = magF275W − magF814W
col3 = (magF275W − magF336W) – (magF336W − magF438W)
Δcol = Wcol ((col – xr)/(xr − xb))
Δcol3 = Wcol3 ((col3 – yr)/(yr − yb)) (see Section 2)
Wcol and Wcol3 = widths of the RGB in col and col3
PCM = pseudo-colour map = Δcol in abscissa and Δcol3 in ordinate

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