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Table 1 RMS misfit and \(\chi^{2}\) values for individual seismic phases

From: Crustal structure of the eastern Piedmont and Atlantic coastal plain in North Carolina and Virginia, eastern North American margin

Seismic phase

No. of picked travel times

RMS (ms)

\(\chi^{2}\)

Uncertainty of the picks (ms)

Pg

1647

49

1.02

50

P1P

508

57

0.60

80–100

P2P

121

57

0.74

80–100

P3P

186

58

1.12

80–100

P4P

255

58

0.73

80–100

PmP

482

63

0.99

80–100

Pn

85

63

0.72

80–100

Sg

575

115

1.33

100

S1S

190

115

1.34

100–150

S2S

46

66

0.45

100–150

S3S

58

116

1.37

100–150

S4S

73

133

1.78

100–150

SmS

275

116

1.08

100

Sn

97

77

0.60

100