Table 1 Summary of the percentage of missing data and its distribution across pollutants.The table shows the total data missing rates and the data missing rates for various pollutants from 2014 to 2023.
From: Air quality assessment in Beijing based on cloud model
Year | Total missing rate | CO | \(NO_2\) | \(O_3\) | \(PM_{10}\) | \(PM_{2.5}\) | \(SO_2\) |
|---|---|---|---|---|---|---|---|
2014 | 2.18% | 0.19% | 0.4% | 0.24% | 0.95% | 0.15% | 0.25% |
2015 | 1.44% | 0.06% | 0.15% | 0.07% | 1.02% | 0.08% | 0.06% |
2016 | 0.91% | 0.06% | 0.02% | 0.14% | 0.63% | 0.03% | 0.03% |
2017 | 0.49% | 0.02% | 0.01% | 0.01% | 0.44% | 0.01% | 0.01% |
2018 | 0.32% | 0 | 0 | 0 | 0.32% | 0 | 0 |
2019 | 0.06% | 0 | 0 | 0 | 0.06% | 0 | 0 |
2020 | 0.07% | 0.01% | 0.01% | 0.01% | 0.01% | 0.01% | 0.01% |
2021 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
2022 | 0.15% | 0.01% | 0 | 0 | 0.13% | 0.01% | 0 |
2023 | 1.97% | 0.33% | 0.32% | 0.33% | 0.32% | 0.33% | 0.33% |
