MAXI/GSC hardness-intensity diagram of GRS 1915+105 from daily monitoring observations since August 2009. The blue data points (dark triangles and light blue squares) indicate the recent low-luminosity state with increased spectral hardness. The light blue squares correspond to the anomalous state with occasional strong X-ray flares (red diamonds) and highly variable radio emission. The numbered green boxes correspond to the NuSTAR epochs.