Fig. 5From: Investigation into the predictive performance of colorimetric sensor strips using RGB, CMYK, HSV, and CIELAB coupled with various data preprocessing methods: a case study on an analysis of water quality parametersCorrelation graphs comparing the predicted values and actual values presented in Supplementary Materials Table S1 using ULR prediction a Mn2+, b Fe2+/Fe3+, c Cu2+, d NO3-, and e PO43- and PLS prediction of f SO42-, g pH, and h total hardness test stripsBack to article page