X-ray and radio lightcurves of GRS 1915+105 over a ten year period with the red marks representing persistent radio emission associated with class χ or the “plateau” state (i.e. ASM counts of 30 − 50 per second and HR2 > 1.5); the bottom graph shows 15 GHz radio observations taken by the Ryle Telescope, the middle and top graphs show 2 − 12 keV X-ray and HR2 hardness ratio respectively observations taken with the RXTE-ASM.