Fig. 3From: Insecticide resistance status of malaria vectors Anopheles gambiae (s.l.) of southwest Burkina Faso and residual efficacy of indoor residual spraying with microencapsulated pirimiphos-methyl insecticideApplied doses of pirimiphos-methyl on cement (a) and mud (b) walls. Red diamonds show the mean concentrations of pirimiphos-methyl on filter papers. Boxes show first and third quartiles as well as the median concentration. The whiskers extend to the largest and lowest values that are no further than 1.5 * IQR (where IQR is the interquartile range or distance between the first and third quartiles). Black dots represent concentration measured for all filter papersBack to article page