Fig. 6
From: Detection of cavities in a salt mine with cosmic muons: expected results and first data
Normalised relative transmission from the voids at \(-106\) and \(-85\) for different days of data taking. Left: 30 days. Middle: 60 days Right: 120 days. All histograms have a bin size of \(2^\circ \times 2^\circ\).
