Inner radius results from our MCMC based analysis displayed from left to right for Observations 1 to 4 respectively. Top panels: the distribution of inner radius values along the 200 000 element chain with every 200th element displayed for clarity. Lower panels: probability distributions for the inner radius, each bin has a width of 10 r_isco. An inner accretion disc at the ISCO is clearly ruled out for the four hard state observations.