Figure 6
![Figure 6](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1475-2875-11-367/MediaObjects/12936_2012_Article_2595_Fig6_HTML.jpg)
Representative Bland-Altman plots obtained by comparing different analytical approaches. The x-axis shows the mean of both computationally and manually derived estimates for the PPFC and the y-axis the difference between them. The inner solid line represents the mean difference for PPFC values while the outer dotted lines denote the lower and upper 95% limits of agreement between the different strategies.