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Table 1 Estimated amplitude of the annual gravity change and their 95% confidence intervals, as equivalent water thickness (units: cm), within each spatial area

From: Possible correlation between annual gravity change and shallow background seismicity rate at subduction zone by surface load

Long. (°)

Lati. (°)

Annu. grav. (cm)

95% (low) (cm)

95% (up) (cm)

5

35

1.25

0.94

1.57

15

35

0.98

0.62

1.33

25

35

3.12

2.72

3.53

35

35

4.33

3.88

4.78

115

− 5

3.18

2.50

3.86

135

35

2.50

1.84

3.15

165

55

8.71

7.84

9.59

175

− 45

1.81

1.52

2.10

175

− 35

2.45

2.08

2.83

195 (− 165)

55

0.72

0.63

0.81

205 (− 155)

55

5.57

4.96

6.18

215 (− 145)

55

0.55

0.49

0.60

235 (− 125)

45

12.85

11.91

13.79

255 (− 105)

25

3.09

2.67

3.51

265 (− 95)

15

9.84

8.92

10.77

275 (− 85)

− 5

0.45

0.32

0.58

275 (− 85)

5

8.23

7.45

9.00

285 (− 75)

− 55

3.48

2.69

4.28

285 (− 75)

− 45

5.74

5.05

6.43

285 (− 75)

15

3.31

2.97

3.66

295 (− 65)

− 55

1.59

1.18

2.00

  1. The longitude and latitude indicate the center point of each area