Figure 5

Relative Standard Deviation of the Intensity ratio of the 1083/152 cm–1 bands calculated for each otolith group. With blue, Group A, green Group B, red Group C and black Group E.

Relative Standard Deviation of the Intensity ratio of the 1083/152 cm–1 bands calculated for each otolith group. With blue, Group A, green Group B, red Group C and black Group E.