tr= getParam( 'timerange', '2012-09-01', 'timerange to load' ) mag_UVW= getDataSet('http://emfisis.physics.uiowa.edu/Flight/RBSP-A/Quick-Look/$Y/$m/$d/rbsp-a_magnetometer_uvw_emfisis-Quick-Look_$Y$m$d_v$(v,sep).cdf?timerange=%s&Mag[::4]' % tf ) result = magnitude(mag_UVW)