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Fig. 6 | Heritage Science

Fig. 6

From: Smartphone citizen science: can a conservation hypothesis be tested using non specialist technology?

Fig. 6

Graph of yellowing vector Y measured against print date of journal. Black squares the vector length of the product xy from measurements, the Yellowing parameter Y (Y-axis) to give an indication of relative time dependent yellowing of the journal date of issue (X-axis) of the Wagga Wagga Daily Advertiser from 1868 to 2004 using the X-Rite I1 Pro. The main regions of distinction can be seen; these are described in the “Results” section. The 10 year rolling average is shown as a grey line

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