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# Table 2 Weight factors for observation error covariance matrices in generation of the IGRF13-SV candidate model

Iteration# |
\(\alpha_{S}\) (factor for \({\mathbf{R}}_{S}\)) [\(\times 1.4 \times 10^{4}\)] |
\(\alpha_{UW} \left( {{\text{factor for }}{\mathbf{R}}_{U} ,{\mathbf{R}}_{W} } \right)\) [\(\times 300\)] |
---|---|---|

1 | 1.0 | 1.0 |

2 | 0.2 | 0.2 |

3 | 0.1 | 0.2 |

4 | 0.02 | 0.2 |

5 | 0.001 | 0.2 |