Abstract We report measurements of the angular distributions low momentum atmospheric muons at 38 m above sea level for zenith angles θ between -60 and 60 degrees in south-north direction. The muon detection was performed with two NaI(Tl) scintillation detectors mounted coincidence. An adjustable lead thickness placed allowed to select a minimal ranging from 0.3 0.9 GeV/c. integrated differenti...