Fig. 6: Agreement of new and traditionally used cell count parameters.

Modified Bland-Altman plot to depict the agreement of the FCM_b and EFM measurements. Mean differences [%] of FCM_b_TCC to EFM_TCC (n = 69) were plotted against the means of the respective method. The colours code for the sample origin (events 1-6; LTM: monthly samples from long term monitoring; Baseflow 2020). The central horizontal green line represents the mean difference between the two methods, the other two horizontal dotted lines represent the limit of agreement (mean percentage differences ± 1.96 standard deviation).