测试项目 | 最小值 | 最大值 | 平均值 | 标准差 | 中位数 | 变异系数 |
Na | 3.277 | 7.095 | 5.873 | 0.771 | 5.956 | 0.131 |
K+ | 0.589 | 0.610 | 0.602 | 0.004 | 0.601 | 0.007 |
Mg2+ | 1.330 | 3.715 | 3.235 | 0.494 | 3.317 | 0.153 |
Ca2+ | 12.172 | 30.188 | 20.188 | 3.125 | 19.968 | 0.155 |
Cl− | 1.921 | 4.621 | 3.575 | 0.538 | 3.479 | 0.150 |
| 3.965 | 10.834 | 8.610 | 1.534 | 8.801 | 0.178 |
| 6.102 | 115.932 | 52.835 | 26.251 | 50.339 | 0.497 |
pH | 6.57 | 9.28 | 7.85 | 0.87 | 7.57 | 0.111 |
TDS | 42.281 | 120.008 | 78.524 | 15.376 | 75.643 | 0.196 |