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Table 1 Summary of concentrations by variables

From: Improving the performance of spray operators through monitoring and evaluation of insecticide concentrations of pirimiphos-methyl during indoor residual spraying for malaria control on Bioko Island

VariablesnMeanMedianSTDDEV
Room
 Bedroom3571.6961.3281.387
 Living room3571.2960.9271.131
Location
 Top2381.5481.1871.321
 Middle2381.5431.1861.269
 Bottom2381.3980.9711.248
Surface
 Cement3901.3130.9281.205
 Wood3241.7171.3781.333
Spray period
 March3601.2070.8391.146
 June3541.7911.4571.342
 Total7141.4971.1081.280
  1. The concentration of residual determined by HPLC is presented with the number of samples included, the mean, median, and standard deviation for the type of room, location on surface, surface type, and for the two observed periods of spraying in March and June 2018