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Table 2 Empirical standard deviations (mas) of the RL05 and RL06 GRACE-based equatorial effective angular momentum functions

From: Mass-related excitation of polar motion: an assessment of the new RL06 GRACE gravity field models

  \(\chi _1^{{\rm mass}}\) \(\chi _2^{{\rm mass}}\)
CSR RL05 4.4 (10%) 3.2 (7%)
JPL RL05 5.3 (12%) 4.2 (9%)
GFZ RL05 7.3 (16%) 3.5 (7%)
ITSG-Grace2016 3.8 (8%) 3.1 (7%)
CSR RL06 2.2 (6%) 1.9 (4%)
JPL RL06 2.6 (7%) 2.3 (5%)
GFZ RL06 3.9 (11%) 4.0 (9%)
ITSG-Grace2018 2.2 (6%) 2.3 (5%)
  1. The smallest empirical standard deviations of the RL05 and RL06 solutions are marked in italics