年份 | 采样点位数 | 总α | 总β | ||
范围 | 均值 | 范围 | 均值 | ||
2012 | 2 | 18.0~20.0 | 19.0 ± 1.4 | 46.9~85.0 | 66.0 ± 26.9 |
2013 | 2 | 37.2~22.9 | 30.1 ± 10.1 | 75.1~77.6 | 76.4 ± 1.8 |
2014 | 2 | 28.7~41.4 | 35.1 ± 9.0 | 79.1~92.9 | 86.0 ± 9.8 |
2015 | 2 | 18.0~37.0 | 27.5 ± 13.4 | 35.0~91.0 | 63.0 ± 39.6 |
2016 | 2 | 58.0~62.0 | 60.0 ± 2.8 | 67.0~74.0 | 70.5 ± 4.9 |
2017 | 2 | 40.0~73.0 | 56.5 ± 23.3 | 51.0~120.0 | 85.5 ± 48.8 |
2018 | 2 | 18.0~39.0 | 28.5 ± 14.8 | 65.0~94.0 | 79.5 ± 20.5 |
2019 | 2 | 21.0~25.0 | 23.0 ± 2.8 | 77.0~83.0 | 80.0 ± 4.2 |
2020 | 2 | 12.0~12.0 | 12.0 ± 0.0 | 75.0~84.0 | 79.5 ± 6.4 |
2021 | 2 | 33.0~35.0 | 34.0 ± 1.4 | 84.0~92.0 | 88.0 ± 5.7 |
合计 | 20 | 12.0~58.0 | 32.6 ± 16.7 | 35.0~120.0 | 77.4 ± 18.7 |