2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/914Project GRAND measures the asymmetries of secondary cosmic muons by calculating the differences between the muons from the east and the muons from the west for complete solar days. A similar north-south difference is also presented. These muons are identified in single track data taken with the 64 stations of Project GRAND; the data cover a two year span with a total muon sample of 30 billion muons.4 pages, 2 figuresAstrophysicstext