Fig. 3From: Eutrophication factor analysis using Carlson trophic state index (CTSI) towards non-algal impact reservoirs in TaiwanProportion of scattering data based on deviations between TSI in different regions for 21 reservoirs in Taiwan under seasonal variations. The variations of index are represented by region I to IV. Region I: TSI(Chl-a) < TSI(SD) and TSI(Chl-a) > TSI(TP); Region II: TSI(Chl-a) > TSI(SD) and TSI(Chl-a) > TSI(TP); Region III: TSI(Chl-a) < TSI(SD) and TSI(Chl-a) < TSI(TP); Region IV: TSI(Chl-a) > TSI(SD) and TSI(Chl-a) < TSI(TP)Back to article page