Since April 16, 2018 Liulin-MO aboard ExoMars Trace Gas Orbiter operates successfully on TGO science orbit – a circular orbit at 400 km above Mars with a period of two hours. Solar activity decreases, the 24th Solar Cycle is at its minimum now. Liulin-MO measures the GCR flux and the radiation doses they deliver since TGO began its journey to Mars. Figure 1 presents the development of Solar Cycle 24 and the intervals of Liulin-MO operations. MCO indicate the initial highly elliptic Mars Capture Orbits.