Fig. 3From: Orienting paleomagnetic drill cores using a portable GPS compassAzimuths measured by the GPS and magnetic (mag) compasses relative to the sun compass for 11 different directions. At the measurement site the sky above is open and the elevation mask was set to 5°. For the GPS compass, azimuthal data were acquired for about 30 min at 1 Hz, and the root-mean-squares are indicated by vertical barsBack to article page