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American Relative Sunspot Numbers for February 2001

DayMn. Raw Ras.d.       Mn. Rak  s.d.
1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

98

112

128

134

139

148

147

151

154

129

120

90

104

95

97

78

80

96

103

109

129

107

86

79

78

73

62

68

4.3

5.5

7

6.7

8.2

8.7

8.5

7.7

9.7

6.5

5.4

5.3

4

3.5

3

4.9

4.1

4.9

5.3

5

5.5

6

5.7

5.1

3.9

4.4

3.6

4.1

  76

88

102

107

112

122

125

124

128

103

100

75

84

81

79

68

66

81

84

88

102

84

72

66

62

61

53

57

2.9

3.6

4.5

4.5

5.5

6.1

5.6

5.1

6.3

4.6

4.6

4.3

2.9

2

2.5

3.3

3

3.4

3.2

3.7

3.9

3.8

3.8

3.7

2.5

3

2.6

3.1

Means:106.9  87.5 
No. of Observations: 896
No. of Observers: 65

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