Table 2 Uncertainties for D component
From: Uncertainty in hourly mean data from classical magnetometers
Variable | Value of the variable | Uncertainty (\( \delta \)) of the variable | Term | Uncertainty of the term |
|---|---|---|---|---|
A (′) | 8737.1 | 0.05 | \( \left( {\delta A} \right)^{2} \) | 0.0025 |
B (′) | 13,342.8 | 0.1 | \( \left( {\delta B} \right)^{2} \) | 0.01 |
Az (′) | 4347.7 | 0.1 | \( \left( {\delta A_{Z} } \right)^{2} \) | 0.01 |
SD (′/mm) | 1.0 | 0.1 | \( \left( {\left( {n_{Dm} - n_{{D{\text{abs}}}} } \right)\delta S_{D} } \right)^{2} \) | 0.390625 |
nDabs (mm) | 18.5 | 0.1 | \( \left( {S_{D} \delta n_{Dm} } \right)^{2} \) | 0.01 |
nDm (mm) | 24.75 | 0.12 | \( (S_{D} \delta n_{{D{\text{abs}}}} )^{2} \) | 0.0144 |
Total uncertainty Dm (′) | 0.6 |