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Estimating nutrient concentrations from catchment characteristics across the UK

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Academic year: 2021

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Figure

Fig. 1. Water quality monitoring sites used within the study; regression analysis sites (red), test sites (green)
Table 1. r 2 values, showing the positive and negative relationships between the variables.
Fig. 2. Nitrate and orthophosphate concentrations and their relationship with other catchment characteristics.
Figure 5 shows the corresponding results of the two tests for orthophosphate. Figure 5a shows observed and predicted mean orthophosphate concentrations for the 117 test sites (r 2 = 0.46)
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