Fig. 6

Group mean (SD) IZ of all six columns at different VC levels (grey) and different ES intensities (white). * Significant difference between ES and VC derived IZ as well as between different VC intensities (P < 0.05)
Group mean (SD) IZ of all six columns at different VC levels (grey) and different ES intensities (white). * Significant difference between ES and VC derived IZ as well as between different VC intensities (P < 0.05)