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Table 3 CIY4 SIVW application, where the “x” indicate the QD latitude and sun position of the data type and which parameters it directly influences

From: A comprehensive model of Earth’s magnetic field determined from 4 years of Swarm satellite observations

Type QD latitude Sun position Nominal Nuisance
Low Mid High Light Dark Core Lithosphere Tide Core Lithosphere Tide
OHM-NEC x x x   x x x x    
OHM-NEC x x x x      x x x
Single-F x x x   x x x x    
Single-BP3 x x    x x x x    
Diffs-F x x x   x x x x    
Diffs-NEC x x    x x x x    
Diffs-F x    x      x x x
Diffs-NEC x    x      x x x
Diffs-F   x x x    x x x   
Diffs-NEC   x   x    x x x   
Sums-F x x x   x x     x x
Sums-NEC x x    x x     x x
Sums-F x x x x      x x x
Sums-NEC x x   x      x x x