Fig. 9From: Colorimetry to assess the visual impact of dust deposition on mosaics at sheltered archaeological sitesGraphic representation of L′, C′ab and hab from the ochre tesserae (oc) after each cleaning process: the surface a with a 6-week deposit layer (m0), b after brushing (m1) and c after mopping (m2). The mean L*C*hab values are represented by (●). The mean values of the previous cleaning stages are represented by (x) and (o) so it is easier to determine the shift (Table 1)Back to article page