Fig. 4From: NetPICOmag: A low-cost networked magnetometer and its applicationsMagnetic data gathered from NPM from January 26, 2009 at Athabasca, Alberta, Canada. NPM data appears in the upper trace and the calibrated SMALL 1 Hz fluxgate magnetometer is shown in the lower trace. The NPM data is offset by 50 nT to enhance readability.Back to article page