Fig. 3
A Log10 transformations of the error of the 24 colour corrector swatches before colour correction (pink) and after colour correction (blue) for images captured on a Nikon D60 at four different locations with different lighting conditions. The box is created from the first to the third quartile and the horizontal line through the box indicates the median. Thin whiskers show 1.5 × IQR from the edges of the box. Different letters indicate that means are significantly different (Tukey HSD, p < .05). B Shows the photos of the colour corrector board in the four locations, before and after colour correction