Averaged count rate of the Mainz 1998/1999 data (filled red squares) with fit for (red line) and of the 2001 data (open blue squares) with fit for (blue line) in comparison with previous Mainz data from 1994 (open green circles) as a function of the retarding energy near the endpoint and effective endpoint (taking into account the width of the response function of the setup and the mean rotation-vibration excitation energy of the electronic ground state of the daughter molecule).
