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Table 3 12th Generation International Geomagnetic Reference Field

From: International Geomagnetic Reference Field: the 12th generation

 

Degree

Order

IGRF

IGRF

IGRF

IGRF

IGRF

IGRF

IGRF

IGRF

IGRF

DGRF

DGRF

DGRF

DGRF

DGRF

DGRF

DGRF

DGRF

DGRF

DGRF

DGRF

DGRF

DGRF

DGRF

IGRF

SV

g/h

n

m

1900.0

1905.0

1910.0

1915.0

1920.0

1925.0

1930.0

1935.0

1940.0

1945.0

1950.0

1955.0

1960.0

1965.0

1970.0

1975.0

1980.0

1985.0

1990.0

1995.0

2000.0

2005.0

2010.0

2015

2015-20

g

1

0

-31543

-31464

-31354

-31212

-31060

-30926

-30805

-30715

-30654

-30594

-30554

-30500

-30421

-30334

-30220

-30100

-29992

-29873

-29775

-29692

-29619.4

-29554.63

-29496.57

-29442.0

10.3

g

1

1

-2298

-2298

-2297

-2306

-2317

-2318

-2316

-2306

-2292

-2285

-2250

-2215

-2169

-2119

-2068

-2013

-1956

-1905

-1848

-1784

-1728.2

-1669.05

-1586.42

-1501.0

18.1

h

1

1

5922

5909

5898

5875

5845

5817

5808

5812

5821

5810

5815

5820

5791

5776

5737

5675

5604

5500

5406

5306

5186.1

5077.99

4944.26

4797.1

-26.6

g

2

0

-677

-728

-769

-802

-839

-893

-951

-1018

-1106

-1244

-1341

-1440

-1555

-1662

-1781

-1902

-1997

-2072

-2131

-2200

-2267.7

-2337.24

-2396.06

-2445.1

-8.7

g

2

1

2905

2928

2948

2956

2959

2969

2980

2984

2981

2990

2998

3003

3002

2997

3000

3010

3027

3044

3059

3070

3068.4

3047.69

3026.34

3012.9

-3.3

h

2

1

-1061

-1086

-1128

-1191

-1259

-1334

-1424

-1520

-1614

-1702

-1810

-1898

-1967

-2016

-2047

-2067

-2129

-2197

-2279

-2366

-2481.6

-2594.50

-2708.54

-2845.6

-27.4

g

2

2

924

1041

1176

1309

1407

1471

1517

1550

1566

1578

1576

1581

1590

1594

1611

1632

1663

1687

1686

1681

1670.9

1657.76

1668.17

1676.7

2.1

h

2

2

1121

1065

1000

917

823

728

644

586

528

477

381

291

206

114

25

-68

-200

-306

-373

-413

-458.0

-515.43

-575.73

-641.9

-14.1

g

3

0

1022

1037

1058

1084

1111

1140

1172

1206

1240

1282

1297

1302

1302

1297

1287

1276

1281

1296

1314

1335

1339.6

1336.30

1339.85

1350.7

3.4

g

3

1

-1469

-1494

-1524

-1559

-1600

-1645

-1692

-1740

-1790

-1834

-1889

-1944

-1992

-2038

-2091

-2144

-2180

-2208

-2239

-2267

-2288.0

-2305.83

-2326.54

-2352.3

-5.5

h

3

1

-330

-357

-389

-421

-445

-462

-480

-494

-499

-499

-476

-462

-414

-404

-366

-333

-336

-310

-284

-262

-227.6

-198.86

-160.40

-115.3

8.2

g

3

2

1256

1239

1223

1212

1205

1202

1205

1215

1232

1255

1274

1288

1289

1292

1278

1260

1251

1247

1248

1249

1252.1

1246.39

1232.10

1225.6

-0.7

h

3

2

3

34

62

84

103

119

133

146

163

186

206

216

224

240

251

262

271

284

293

302

293.4

269.72

251.75

244.9

-0.4

g

3

3

572

635

705

778

839

881

907

918

916

913

896

882

878

856

838

830

833

829

802

759

714.5

672.51

633.73

582.0

-10.1

h

3

3

523

480

425

360

293

229

166

101

43

-11

-46

-83

-130

-165

-196

-223

-252

-297

-352

-427

-491.1

-524.72

-537.03

-538.4

1.8

g

4

0

876

880

884

887

889

891

896

903

914

944

954

958

957

957

952

946

938

936

939

940

932.3

920.55

912.66

907.6

-0.7

g

4

1

628

643

660

678

695

711

727

744

762

776

792

796

800

804

800

791

782

780

780

780

786.8

797.96

808.97

813.7

0.2

h

4

1

195

203

211

218

220

216

205

188

169

144

136

133

135

148

167

191

212

232

247

262

272.6

282.07

286.48

283.3

-1.3

g

4

2

660

653

644

631

616

601

584

565

550

544

528

510

504

479

461

438

398

361

325

290

250.0

210.65

166.58

120.4

-9.1

h

4

2

-69

-77

-90

-109

-134

-163

-195

-226

-252

-276

-278

-274

-278

-269

-266

-265

-257

-249

-240

-236

-231.9

-225.23

-211.03

-188.7

5.3

g

4

3

-361

-380

-400

-416

-424

-426

-422

-415

-405

-421

-408

-397

-394

-390

-395

-405

-419

-424

-423

-418

-403.0

-379.86

-356.83

-334.9

4.1

h

4

3

-210

-201

-189

-173

-153

-130

-109

-90

-72

-55

-37

-23

3

13

26

39

53

69

84

97

119.8

145.15

164.46

180.9

2.9

g

4

4

134

146

160

178

199

217

234

249

265

304

303

290

269

252

234

216

199

170

141

122

111.3

100.00

89.40

70.4

-4.3

h

4

4

-75

-65

-55

-51

-57

-70

-90

-114

-141

-178

-210

-230

-255

-269

-279

-288

-297

-297

-299

-306

-303.8

-305.36

-309.72

-329.5

-5.2

g

5

0

-184

-192

-201

-211

-221

-230

-237

-241

-241

-253

-240

-229

-222

-219

-216

-218

-218

-214

-214

-214

-218.8

-227.00

-230.87

-232.6

-0.2

g

5

1

328

328

327

327

326

326

327

329

334

346

349

360

362

358

359

356

357

355

353

352

351.4

354.41

357.29

360.1

0.5

h

5

1

-210

-193

-172

-148

-122

-96

-72

-51

-33

-12

3

15

16

19

26

31

46

47

46

46

43.8

42.72

44.58

47.3

0.6

g

5

2

264

259

253

245

236

226

218

211

208

194

211

230

242

254

262

264

261

253

245

235

222.3

208.95

200.26

192.4

-1.3

h

5

2

53

56

57

58

58

58

60

64

71

95

103

110

125

128

139

148

150

150

154

165

171.9

180.25

189.01

197.0

1.7

g

5

3

5

-1

-9

-16

-23

-28

-32

-33

-33

-20

-20

-23

-26

-31

-42

-59

-74

-93

-109

-118

-130.4

-136.54

-141.05

-140.9

-0.1

h

5

3

-33

-32

-33

-34

-38

-44

-53

-64

-75

-67

-87

-98

-117

-126

-139

-152

-151

-154

-153

-143

-133.1

-123.45

-118.06

-119.3

-1.2

g

5

4

-86

-93

-102

-111

-119

-125

-131

-136

-141

-142

-147

-152

-156

-157

-160

-159

-162

-164

-165

-166

-168.6

-168.05

-163.17

-157.5

1.4

h

5

4

-124

-125

-126

-126

-125

-122

-118

-115

-113

-119

-122

-121

-114

-97

-91

-83

-78

-75

-69

-55

-39.3

-19.57

-0.01

16.0

3.4

g

5

5

-16

-26

-38

-51

-62

-69

-74

-76

-76

-82

-76

-69

-63

-62

-56

-49

-48

-46

-36

-17

-12.9

-13.55

-8.03

4.1

3.9

h

5

5

3

11

21

32

43

51

58

64

69

82

80

78

81

81

83

88

92

95

97

107

106.3

103.85

101.04

100.2

0.0

g

6

0

63

62

62

61

61

61

60

59

57

59

54

47

46

45

43

45

48

53

61

68

72.3

73.60

72.78

70.0

-0.3

g

6

1

61

60

58

57

55

54

53

53

54

57

57

57

58

61

64

66

66

65

65

67

68.2

69.56

68.69

67.7

-0.1

h

6

1

-9

-7

-5

-2

0

3

4

4

4

6

-1

-9

-10

-11

-12

-13

-15

-16

-16

-17

-17.4

-20.33

-20.90

-20.8

0.0

g

6

2

-11

-11

-11

-10

-10

-9

-9

-8

-7

6

4

3

1

8

15

28

42

51

59

68

74.2

76.74

75.92

72.7

-0.7

h

6

2

83

86

89

93

96

99

102

104

105

100

99

96

99

100

100

99

93

88

82

72

63.7

54.75

44.18

33.2

-2.1

g

6

3

-217

-221

-224

-228

-233

-238

-242

-246

-249

-246

-247

-247

-237

-228

-212

-198

-192

-185

-178

-170

-160.9

-151.34

-141.40

-129.9

2.1

h

6

3

2

4

5

8

11

14

19

25

33

16

33

48

60

68

72

75

71

69

69

67

65.1

63.63

61.54

58.9

-0.7

g

6

4

-58

-57

-54

-51

-46

-40

-32

-25

-18

-25

-16

-8

-1

4

2

1

4

4

3

-1

-5.9

-14.58

-22.83

-28.9

-1.2

h

6

4

-35

-32

-29

-26

-22

-18

-16

-15

-15

-9

-12

-16

-20

-32

-37

-41

-43

-48

-52

-58

-61.2

-63.53

-66.26

-66.7

0.2

g

6

5

59

57

54

49

44

39

32

25

18

21

12

7

-2

1

3

6

14

16

18

19

16.9

14.58

13.10

13.2

0.3

h

6

5

36

32

28

23

18

13

8

4

0

-16

-12

-12

-11

-8

-6

-4

-2

-1

1

1

0.7

0.24

3.02

7.3

0.9

g

6

6

-90

-92

-95

-98

-101

-103

-104

-106

-107

-104

-105

-107

-113

-111

-112

-111

-108

-102

-96

-93

-90.4

-86.36

-78.09

-70.9

1.6

h

6

6

-69

-67

-65

-62

-57

-52

-46

-40

-33

-39

-30

-24

-17

-7

1

11

17

21

24

36

43.8

50.94

55.40

62.6

1.0

g

7

0

70

70

71

72

73

73

74

74

74

70

65

65

67

75

72

71

72

74

77

77

79.0

79.88

80.44

81.6

0.3

g

7

1

-55

-54

-54

-54

-54

-54

-54

-53

-53

-40

-55

-56

-56

-57

-57

-56

-59

-62

-64

-72

-74.0

-74.46

-75.00

-76.1

-0.2

h

7

1

-45

-46

-47

-48

-49

-50

-51

-52

-52

-45

-35

-50

-55

-61

-70

-77

-82

-83

-80

-69

-64.6

-61.14

-57.80

-54.1

0.8

g

7

2

0

0

1

2

2

3

4

4

4

0

2

2

5

4

1

1

2

3

2

1

0.0

-1.65

-4.55

-6.8

-0.5

h

7

2

-13

-14

-14

-14

-14

-14

-15

-17

-18

-18

-17

-24

-28

-27

-27

-26

-27

-27

-26

-25

-24.2

-22.57

-21.20

-19.5

0.4

g

7

3

34

33

32

31

29

27

25

23

20

0

1

10

15

13

14

16

21

24

26

28

33.3

38.73

45.24

51.8

1.3

h

7

3

-10

-11

-12

-12

-13

-14

-14

-14

-14

2

0

-4

-6

-2

-4

-5

-5

-2

0

4

6.2

6.82

6.54

5.7

-0.2

g

7

4

-41

-41

-40

-38

-37

-35

-34

-33

-31

-29

-40

-32

-32

-26

-22

-14

-12

-6

-1

5

9.1

12.30

14.00

15.0

0.1

h

7

4

-1

0

1

2

4

5

6

7

7

6

10

8

7

6

8

10

16

20

21

24

24.0

25.35

24.96

24.4

-0.3

g

7

5

-21

-20

-19

-18

-16

-14

-12

-11

-9

-10

-7

-11

-7

-6

-2

0

1

4

5

4

6.9

9.37

10.46

9.4

-0.6

h

7

5

28

28

28

28

28

29

29

29

29

28

36

28

23

26

23

22

18

17

17

17

14.8

10.93

7.03

3.4

-0.6

g

7

6

18

18

18

19

19

19

18

18

17

15

5

9

17

13

13

12

11

10

9

8

7.3

5.42

1.64

-2.8

-0.8

h

7

6

-12

-12

-13

-15

-16

-17

-18

-19

-20

-17

-18

-20

-18

-23

-23

-23

-23

-23

-23

-24

-25.4

-26.32

-27.61

-27.4

0.1

g

7

7

6

6

6

6

6

6

6

6

5

29

19

18

8

1

-2

-5

-2

0

0

-2

-1.2

1.94

4.92

6.8

0.2

h

7

7

-22

-22

-22

-22

-22

-21

-20

-19

-19

-22

-16

-18

-17

-12

-11

-12

-10

-7

-4

-6

-5.8

-4.64

-3.28

-2.2

-0.2

g

8

0

11

11

11

11

11

11

11

11

11

13

22

11

15

13

14

14

18

21

23

25

24.4

24.80

24.41

24.2

0.2

g

8

1

8

8

8

8

7

7

7

7

7

7

15

9

6

5

6

6

6

6

5

6

6.6

7.62

8.21

8.8

0.0

h

8

1

8

8

8

8

8

8

8

8

8

12

5

10

11

7

7

6

7

8

10

11

11.9

11.20

10.84

10.1

-0.3

g

8

2

-4

-4

-4

-4

-3

-3

-3

-3

-3

-8

-4

-6

-4

-4

-2

-1

0

0

-1

-6

-9.2

-11.73

-14.50

-16.9

-0.6

h

8

2

-14

-15

-15

-15

-15

-15

-15

-15

-14

-21

-22

-15

-14

-12

-15

-16

-18

-19

-19

-21

-21.5

-20.88

-20.03

-18.3

0.3

g

8

3

-9

-9

-9

-9

-9

-9

-9

-9

-10

-5

-1

-14

-11

-14

-13

-12

-11

-11

-10

-9

-7.9

-6.88

-5.59

-3.2

0.5

h

8

3

7

7

6

6

6

6

5

5

5

-12

0

5

7

9

6

4

4

5

6

8

8.5

9.83

11.83

13.3

0.1

g

8

4

1

1

1

2

2

2

2

1

1

9

11

6

2

0

-3

-8

-7

-9

-12

-14

-16.6

-18.11

-19.34

-20.6

-0.2

h

8

4

-13

-13

-13

-13

-14

-14

-14

-15

-15

-7

-21

-23

-18

-16

-17

-19

-22

-23

-22

-23

-21.5

-19.71

-17.41

-14.6

0.5

g

8

5

2

2

2

3

4

4

5

6

6

7

15

10

10

8

5

4

4

4

3

9

9.1

10.17

11.61

13.4

0.4

h

8

5

5

5

5

5

5

5

5

5

5

2

-8

3

4

4

6

6

9

11

12

15

15.5

16.22

16.71

16.2

-0.2

g

8

6

-9

-8

-8

-8

-7

-7

-6

-6

-5

-10

-13

-7

-5

-1

0

0

3

4

4

6

7.0

9.36

10.85

11.7

0.1

h

8

6

16

16

16

16

17

17

18

18

19

18

17

23

23

24

21

18

16

14

12

11

8.9

7.61

6.96

5.7

-0.3

g

8

7

5

5

5

6

6

7

8

8

9

7

5

6

10

11

11

10

6

4

2

-5

-7.9

-11.25

-14.05

-15.9

-0.4

h

8

7

-5

-5

-5

-5

-5

-5

-5

-5

-5

3

-4

-4

1

-3

-6

-10

-13

-15

-16

-16

-14.9

-12.76

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-9.1

0.3

g

8

8

8

8

8

8

8

8

8

7

7

2

-1

9

8

4

3

1

-1

-4

-6

-7

-7.0

-4.87

-3.54

-2.0

0.3

h

8

8

-18

-18

-18

-18

-19

-19

-19

-19

-19

-11

-17

-13

-20

-17

-16

-17

-15

-11

-10

-4

-2.1

-0.06

1.64

2.1

0.0

g

9

0

8

8

8

8

8

8

8

8

8

5

3

4

4

8

8

7

5

5

4

4

5.0

5.58

5.50

5.4

-

g

9

1

10

10

10

10

10

10

10

10

10

-21

-7

9

6

10

10

10

10

10

9

9

9.4

9.76

9.45

8.8

-

h

9

1

-20

-20

-20

-20

-20

-20

-20

-20

-21

-27

-24

-11

-18

-22

-21

-21

-21

-21

-20

-20

-19.7

-20.11

-20.54

-21.6

-

g

9

2

1

1

1

1

1

1

1

1

1

1

-1

-4

0

2

2

2

1

1

1

3

3.0

3.58

3.45

3.1

-

h

9

2

14

14

14

14

14

14

14

15

15

17

19

12

12

15

16

16

16

15

15

15

13.4

12.69

11.51

10.8

-

g

9

3

-11

-11

-11

-11

-11

-11

-12

-12

-12

-11

-25

-5

-9

-13

-12

-12

-12

-12

-12

-10

-8.4

-6.94

-5.27

-3.3

-

h

9

3

5

5

5

5

5

5

5

5

5

29

12

7

2

7

6

7

9

9

11

12

12.5

12.67

12.75

11.8

-

g

9

4

12

12

12

12

12

12

12

11

11

3

10

2

1

10

10

10

9

9

9

8

6.3

5.01

3.13

0.7

-

h

9

4

-3

-3

-3

-3

-3

-3

-3

-3

-3

-9

2

6

0

-4

-4

-4

-5

-6

-7

-6

-6.2

-6.72

-7.14

-6.8

-

g

9

5

1

1

1

1

1

1

1

1

1

16

5

4

4

-1

-1

-1

-3

-3

-4

-8

-8.9

-10.76

-12.38

-13.3

-

h

9

5

-2

-2

-2

-2

-2

-2

-2

-3

-3

4

2

-2

-3

-5

-5

-5

-6

-6

-7

-8

-8.4

-8.16

-7.42

-6.9

-

g

9

6

-2

-2

-2

-2

-2

-2

-2

-2

-2

-3

-5

1

-1

-1

0

-1

-1

-1

-2

-1

-1.5

-1.25

-0.76

-0.1

-

h

9

6

8

8

8

8

9

9

9

9

9

9

8

10

9

10

10

10

9

9

9

8

8.4

8.10

7.97

7.8

-

g

9

7

2

2

2

2

2

2

3

3

3

-4

-2

2

-2

5

3

4

7

7

7

10

9.3

8.76

8.43

8.7

-

h

9

7

10

10

10

10

10

10

10

11

11

6

8

7

8

10

11

11

10

9

8

5

3.8

2.92

2.14

1.0

-

g

9

8

-1

0

0

0

0

0

0

0

1

-3

3

2

3

1

1

1

2

1

1

-2

-4.3

-6.66

-8.42

-9.1

-

h

9

8

-2

-2

-2

-2

-2

-2

-2

-2

-2

1

-11

-6

0

-4

-2

-3

-6

-7

-7

-8

-8.2

-7.73

-6.08

-4.0

-

g

9

9

-1

-1

-1

-1

-1

-1

-2

-2

-2

-4

8

5

-1

-2

-1

-2

-5

-5

-6

-8

-8.2

-9.22

-10.08

-10.5

-

h

9

9

2

2

2

2

2

2

2

2

2

8

-7

5

5

1

1

1

2

2

2

3

4.8

6.01

7.01

8.4

-

g

10

0

-3

-3

-3

-3

-3

-3

-3

-3

-3

-3

-8

-3

1

-2

-3

-3

-4

-4

-3

-3

-2.6

-2.17

-1.94

-1.9

-

g

10

1

-4

-4

-4

-4

-4

-4

-4

-4

-4

11

4

-5

-3

-3

-3

-3

-4

-4

-4

-6

-6.0

-6.12

-6.24

-6.3

-

h

10

1

2

2

2

2

2

2

2

2

2

5

13

-4

4

2

1

1

1

1

2

1

1.7

2.19

2.73

3.2

-

g

10

2

2

2

2

2

2

2

2

2

2

1

-1

-1

4

2

2

2

2

3

2

2

1.7

1.42

0.89

0.1

-

h

10

2

1

1

1

1

1

1

1

1

1

1

-2

0

1

1

1

1

0

0

1

0

0.0

0.10

-0.10

-0.4

-

g

10

3

-5

-5

-5

-5

-5

-5

-5

-5

-5

2

13

2

0

-5

-5

-5

-5

-5

-5

-4

-3.1

-2.35

-1.07

0.5

-

h

10

3

2

2

2

2

2

2

2

2

2

-20

-10

-8

0

2

3

3

3

3

3

4

4.0

4.46

4.71

4.6

-

g

10

4

-2

-2

-2

-2

-2

-2

-2

-2

-2

-5

-4

-3

-1

-2

-1

-2

-2

-2

-2

-1

-0.5

-0.15

-0.16

-0.5

-

h

10

4

6

6

6

6

6

6

6

6

6

-1

2

-2

2

6

4

4

6

6

6

5

4.9

4.76

4.44

4.4

-

g

10

5

6

6

6

6

6

6

6

6

6

-1

4

7

4

4

6

5

5

5

4

4

3.7

3.06

2.45

1.8

-

h

10

5

-4

-4

-4

-4

-4

-4

-4

-4

-4

-6

-3

-4

-5

-4

-4

-4

-4

-4

-4

-5

-5.9

-6.58

-7.22

-7.9

-

g

10

6

4

4

4

4

4

4

4

4

4

8

12

4

6

4

4

4

3

3

3

2

1.0

0.29

-0.33

-0.7

-

h

10

6

0

0

0

0

0

0

0

0

0

6

6

1

1

0

0

-1

0

0

0

-1

-1.2

-1.01

-0.96

-0.6

-

g

10

7

0

0

0

0

0

0

0

0

0

-1

3

-2

1

0

1

1

1

1

1

2

2.0

2.06

2.13

2.1

-

h

10

7

-2

-2

-2

-2

-2

-2

-2

-1

-1

-4

-3

-3

-1

-2

-1

-1

-1

-1

-2

-2

-2.9

-3.47

-3.95

-4.2

-

g

10

8

2

2

2

1

1

1

1

2

2

-3

2

6

-1

2

0

0

2

2

3

5

4.2

3.77

3.09

2.4

-

h

10

8

4

4

4

4

4

4

4

4

4

-2

6

7

6

3

3

3

4

4

3

1

0.2

-0.86

-1.99

-2.8

-

g

10

9

2

2

2

2

3

3

3

3

3

5

10

-2

2

2

3

3

3

3

3

1

0.3

-0.21

-1.03

-1.8

-

h

10

9

0

0

0

0

0

0

0

0

0

0

11

-1

0

0

1

1

0

0

-1

-2

-2.2

-2.31

-1.97

-1.2

-

g

10

10

0

0

0

0

0

0

0

0

0

-2

3

0

0

0

-1

-1

0

0

0

0

-1.1

-2.09

-2.80

-3.6

-

h

10

10

-6

-6

-6

-6

-6

-6

-6

-6

-6

-2

8

-3

-7

-6

-4

-5

-6

-6

-6

-7

-7.4

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-8.7

-

g

11

0

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

2.7

2.95

3.05

3.1

-

g

11

1

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-1.7

-1.60

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-1.5

-

h

11

1

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.1

0.26

0.13

-0.1

-

g

11

2

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-1.9

-1.88

-2.03

-2.3

-

h

11

2

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1.3

1.44

1.67

2.0

-

g

11

3

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1.5

1.44

1.65

2.0

-

h

11

3

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.9

-0.77

-0.66

-0.7

-

g

11

4

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.1

-0.31

-0.51

-0.8

-

h

11

4

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-2.6

-2.27

-1.76

-1.1

-

g

11

5

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.1

0.29

0.54

0.6

-

h

11

5

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.9

0.90

0.85

0.8

-

g

11

6

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.7

-0.79

-0.79

-0.7

-

h

11

6

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.7

-0.58

-0.39

-0.2

-

g

11

7

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.7

0.53

0.37

0.2

-

h

11

7

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-2.8

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-2.2

-

g

11

8

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1.7

1.80

1.79

1.7

-

h

11

8

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.9

-1.08

-1.27

-1.4

-

g

11

9

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.1

0.16

0.12

-0.2

-

h

11

9

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-1.2

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-2.5

-

g

11

10

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1.2

0.96

0.75

0.4

-

h

11

10

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-1.9

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-2.0

-

g

11

11

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

4.0

3.99

3.75

3.5

-

h

11

11

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.9

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-

g

12

0

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-2.2

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-1.9

-

g

12

1

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.3

-0.29

-0.21

-0.2

-

h

12

1

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.4

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-

g

12

2

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.2

0.21

0.30

0.4

-

h

12

2

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.3

0.23

0.27

0.4

-

g

12

3

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.9

0.89

1.04

1.2

-

h

12

3

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

2.5

2.38

2.13

1.9

-

g

12

4

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.2

-0.38

-0.63

-0.8

-

h

12

4

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-2.6

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-2.2

-

g

12

5

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.9

0.96

0.95

0.9

-

h

12

5

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.7

0.61

0.49

0.3

-

g

12

6

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.5

-0.30

-0.11

0.1

-

h

12

6

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.3

0.40

0.59

0.7

-

g

12

7

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.3

0.46

0.52

0.5

-

h

12

7

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.0

0.01

0.00

-0.1

-

g

12

8

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.3

-0.35

-0.39

-0.3

-

h

12

8

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.0

0.02

0.13

0.3

-

g

12

9

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.4

-0.36

-0.37

-0.4

-

h

12

9

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.3

0.28

0.27

0.2

-

g

12

10

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.1

0.08

0.21

0.2

-

h

12

10

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.9

-0.87

-0.86

-0.9

-

g

12

11

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.2

-0.49

-0.77

-0.9

-

h

12

11

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.4

-0.34

-0.23

-0.1

-

g

12

12

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.4

-0.08

0.04

0.0

-

h

12

12

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.8

0.88

0.87

0.7

-

g

13

0

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.2

-0.16

-0.09

0.0

-

g

13

1

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.9

-0.88

-0.89

-0.9

-

h

13

1

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.9

-0.76

-0.87

-0.9

-

g

13

2

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.3

0.30

0.31

0.4

-

h

13

2

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.2

0.33

0.30

0.4

-

g

13

3

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.1

0.28

0.42

0.5

-

h

13

3

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1.8

1.72

1.66

1.6

-

g

13

4

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.4

-0.43

-0.45

-0.5

-

h

13

4

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.4

-0.54

-0.59

-0.5

-

g

13

5

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1.3

1.18

1.08

1.0

-

h

13

5

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-1.0

-1.07

-1.14

-1.2

-

g

13

6

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.4

-0.37

-0.31

-0.2

-

h

13

6

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.1

-0.04

-0.07

-0.1

-

g

13

7

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.7

0.75

0.78

0.8

-

h

13

7

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.7

0.63

0.54

0.4

-

g

13

8

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.4

-0.26

-0.18

-0.1

-

h

13

8

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.3

0.21

0.10

-0.1

-

g

13

9

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.3

0.35

0.38

0.3

-

h

13

9

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.6

0.53

0.49

0.4

-

g

13

10

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.1

-0.05

0.02

0.1

-

h

13

10

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.3

0.38

0.44

0.5

-

g

13

11

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.4

0.41

0.42

0.5

-

h

13

11

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.2

-0.22

-0.25

-0.3

-

g

13

12

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.0

-0.10

-0.26

-0.4

-

h

13

12

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.5

-0.57

-0.53

-0.4

-

g

13

13

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

0.1

-0.18

-0.26

-0.3

-

h

13

13

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-0.9

-0.82

-0.79

-0.8

-

  1. Here, Schmidt semi-normalized spherical harmonic coefficients are provided. Coefficients for degrees n =1-13 in units of nanotesla are listed for IGRF and definitive DGRF main-field models. Coefficients for degrees n =1-8 in units of nanotesla/year are listed for the predictive secular variation. Undefined coefficients are marked with ‘-’; these should be set to 0.0 in numerical calculations as is the case in the coefficient files available online.