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Table 4 Mean bias and STD of the inversion SSP

From: Centimeter-level-precision seafloor geodetic positioning model with self-structured empirical sound speed profile

SSP depth range (m)

Mean bias from two methods

STD from two methods

Bilinear SSP (m/s)

ESSP (m/s)

Bilinear SSP (m/s)

ESSP (m/s)

0–1727.80

− 1.540

1.413

12.652

9.226

0–300

− 3.031

2.455

14.931

10.862

300–500

3.706

− 3.132

4.344

3.723

500–1727.80

0.796

0.085

3.415

2.448

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