SAM-Magnetograms Äkäslompolo, Suomi, 67.6N, 24.3E
January 25th to February 1st 2003
The first days I had connected a single sensor for Y-direction (east/west) only.
The sensor was laying on a matress and was covered by a folded blanket.
On january 29 I installed a second sensor to also record X-direction (north/south).
Both sensors were embedded between two sheets of styrofoam of 5cm thickness.
Have a look at the description page of my SAM.
I have also produced plots of this data combined with data from SGO.
There you can see how SAM compares to professional scientific magnetic field measurements.