| Sample serial number | Reference of light intensity | Measurement of light intensity | Standard content (mg/L) |
| 1 | 1467.7 | 2055.3 | 0.25 |
| 2 | 1468.5 | 1934.2 | 0.50 |
| 3 | 1469.8 | 1820.7 | 0.75 |
| 4 | 1487.3 | 1732.9 | 1.00 |
| 5 | 1494.3 | 1637.5 | 1.25 |
| 6 | 1471.4 | 1516.5 | 1.50 |
| 7 | 1467.9 | 1422.9 | 1.75 |
| 8 | 1482.5 | 1351.6 | 2.00 |
| 9 | 1489.9 | 1277.5 | 2.25 |
| 10 | 1481.0 | 1194.4 | 2.50 |
| 11 | 1488.5 | 1129.0 | 2.75 |
| 12 | 1494.4 | 1066.1 | 3.00 |
| 13 | 1487.5 | 998.0 | 3.25 |
| 14 | 1478.8 | 933.2 | 3.50 |
| 15 | 1476.5 | 876.4 | 3.75 |
| 16 | 1494.6 | 834.3 | 4.00 |
| 17 | 1478.1 | 776.0 | 4.25 |
| 18 | 1486.5 | 734.0 | 4.50 |
| 19 | 1484.5 | 689.5 | 4.75 |
| 20 | 1466.9 | 640.7 | 5.00 |