Fig. 3: Box plots of contamination impact values.
From: Optimization of valve switch control for contamination detection in water distribution network

Comparison of overall contamination indicators between IPBGOA and GOA, GA, DE, GWO, and PSO methods under (a) the first simulation experiment; (b) the second simulation experiment; (c) the third simulation experiment; (e) the fourth simulation experiment; (f) the fifth simulation experiment and (g) the sixth simulation experiment.