Figure 2
Panel A is the regression of body density (g/cm3) determined by BOD PODBH before hydrostatic weighing against body density determined by BOD PODFH following hydrostatic weighing. The dotted line is the line of identity (regression slope = 1 and regression intercept = 0). The regression line did not significantly deviate from the line of identity. Panel B are the residuals from linear regressions of body density BOD PODBH on body density from the BOD PODFH. The middle line represents the mean difference while the upper and lower dashed lines represent ±2 SD from the mean. No bias was observed as indicated by the non-significant P value.