Figure 3
Representation of the APOCHIP linear regression for the dilution series. The upper left subplot shows a histogram of all the slopes from the linear regression, and the upper right subplot shows the slopes as a function of the position on the chip. The lower left subplot gives the slopes as a function of the average intensity. For high intensity values the slopes are either large or small. In the lower right subplot are the variance terms σf2 as a function of the slopes.