AS | cd | pb | Se | Parameters |
0.009 | 0.484 | 0.215 | 0.523 | Mean |
0.094 | 0.159 | 0.838 | 0.691 | Maximum |
0 | 0 | 0 | 0.19 | Minimum |
0.024 | 0.035 | 0.02 | 0.124 | Standard deviation |
0.01 | 0.003 | 0.01 | 0.01 | Maximum permissible limit (WHO) |
13 | 56 | 33 | 100 | Samples exceeding maximum permissible limit (%) |