18 Comparison between Liulin-5 and NASA TEPC  The measurements for the period June 2007 - September 2008 with the NASA TEPC in the US and ESA modules of ISS [Semones, 2008] show that about 70% of dose equivalent in ISS is from GCR and at least 2/3 of it is the contribution of particles with LET > 10 keV/µm.