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