Fig. 7.
From: Rapid modelling of the large-scale magnetospheric field from Swarm satellite data
Differences between 
coefficient from TDS-1 reference model and FTMMs produced from (top) magnetospheric and ionospheric sources using all local times; (second from top) magnetospheric and ionospheric sources using 12 hour local-time window centred on midnight; (third from top) magnetospheric sources only using 12 hour window; (bottom) magnetospheric sources produced from degree 1 terms only of TDS-1 and using 12 hour window.