Table 5 Cluster centers for pesticide residues in rice grains and number of samples for each quality class of rice grains.
Pesticide residue category | di | dj | Sample size | Quality level |
|---|---|---|---|---|
Imidacloprid1 | 0.175094 | 0.174302 | 58 | High |
Imidacloprid2 | 0.475114 | 0.377805 | 44 | Medium |
Imidacloprid3 | 0.691503 | 0.726016 | 26 | Low |
Carbaryl1 | 0.204365 | 0.229138 | 58 | High |
Carbaryl2 | 0.442228 | 0.258096 | 26 | Medium |
Carbaryl3 | 0.635743 | 0.775555 | 44 | Low |
Fenitrothion1 | 0.138968 | 0.176098 | 63 | High |
Fenitrothion2 | 0.716148 | 0.454448 | 51 | Medium |
Fenitrothion3 | 0.876827 | 0.753999 | 14 | Low |
Chlorpyrifos-methyl1 | 0.142882 | 0.193525 | 65 | High |
Chlorpyrifos-methyl2 | 0.441751 | 0.391043 | 41 | Medium |
Chlorpyrifos-methyl3 | 0.805059 | 0.680081 | 22 | Low |
Deltamethrin1 | 0.379217 | 0.117314 | 29 | High |
Deltamethrin2 | 0.449469 | 0.529897 | 35 | Medium |
Deltamethrin3 | 0.775338 | 0.582341 | 64 | Low |
