-^12
-12
-12
-12
-12
-12
-^12
2 -22-254^194178
0
-186
-^8
-8
-8
-8
-8
-8
- 8
-8
-^8
-8
-8
-14
-170-174-176
-1 4
-16 0
- 166
-4
-4
-14
-1^48
-152^166
-152
(^146)
164
-1 34 -^138
-142
-13 6
-1^36 - 130
132 1
52
0
-^14
142 140138
(^13616)
132 128
126
124
-14
122 122
-14
-6
-2
-2
(^120)
(^118116)
114
-6
-6
112
110
108
-6
- 6
106
106
-6
-6
-6
(^104)
-6
-6
102
-128
(^1261)
00
100
-124
-124
98
98
-12 2
-12 0 -122^96
-118
-118
94
94
-116 -^116
114 92
-112 - 114
-112
90
-110
88
88
-10 8
86
-106^86
-6
- 6
-104
84
84
84
- (^102)
-^102
82
-100
-98
-98
(^8) - 9
80
-96
78
78
-6
-^10
-10
-9 4
-94
-92^76
- 90
-90
-^90
74
74
-88
72
-86
-86
-^86
-10
-10
-10
70
70
-2
-2
-2
-84
-84
(^82)
82
(^68)
-10
-1^0
-^10
-80
66
-7 8 66
-78
-76 64
-^76
62
-7 4
- 74
-72
60
-7 0 60
-70
58
58
-68^58
-6 8
-^68
-10
-10
-1 0
56
56
-66
-66
-64
- 64 54
54
54
-62
-^6252
52
-60
- 60 50
50
-58^50
- 56
-56
-^56
48
-54 48
(^5446)
-52 46
-52
44
44
(^44)
-50
-50
-50
42
42
42
48 42
-48
-48
-46
-4 6
-46
40
40
40
-44^40
-4 4
-4 4
38
38
(^38)
-4
- 4
-4
-4
- 4
-42
-42
-42
-42
36
36
-4^036
-40
-40
34
34
(^34)
-38
(^38)
-38
-38
-36
36
-36
-36
-36
(^32)
32
32
-34^32
-34
-34
- 34
30
30
30
(^30)
-3^2
-32
-3 2
- 32
-32
- 32
(^28)
28
28
(^28)
14
14 14
12
12
12
-30
- 30
-3 0
-30
16
16
16
10
10
10
(^10)
26
26
26
-28^26
-28
- (^28)
-^28
8 8 8 8 8 8
24
(^24)
24
24
24
-^2624
-26
-2 6
-26
-26
6
6
6
6
6
4 4 4 4 4 4
-^24
-24
- 24
- 24
-^24
- 24
22
(^22)
22
22
22
22
2 2 2 2 2 2 2
-22
-2^2
-22
-2 2
-^22
-6
- 6
-6
-6
-6
- 6
-6
20
20
20
20
20
20
(^20)
0 0 0 0 0 0 0 0
-20
-^20
-20
- 20
- 20
-^20- 20
- 20
-20
18
(^18)
18
18
18
18
- 2
- 2
-2
-2
-2
-2
-2
-18
-^18
-18
-1 8
-^18
-^18
-18
- 4
-4
-4
-4
-4
-4
- 4
-4
-16
-16
- 16
-16
-16
-16
-^14
-14
-5 -75 -70 -10
-65 -6^5
-5
-5
-15
-15
-20 - 60
-60
-55
-55
-2 5
-20
-2 0
-50
-50
-50
-20
-^20
-20
-45
-4 5
-4 5
- 20
-30
-3^0
-3^0
-30
-25
- 25
-2^5
- 25
-35 -25
-30
-40
-15
-15
-15
-15
-15
-15
-5 -30
-40
-40
-35
(^35)
-35
-35
-10
10
-10
- 10
-10
-10
-1 0
-1 0
-5
- 20
-5
-5
-5
-5
-5
10
15
5
5
30
30
10
10
10
5
5
5
5
30
15
15
15
15
15
15
15
15
15
20
20
20
20
20
20
25
15
10
10
10
10
10
10
10
(^10)
25
25
25
20
20
25
5
5
5
5
5
0 0
0 0 0 0 0 0 0 0
0
130°W 120°W 110°W 100°W 90°W 80°W
60°N
50°N
40°N
30°N
20°N
10°N
Figure 33.2: Magnetic declination map for North America.Credit: NOAA.