  We present the largest database so far of atmospheric optical-turbulence
profiles (197035 individual CN2(h)) for an astronomical site, the Roque de los
Muchachos Observatory (La Palma, Spain). This C2 (h) database was obtained
through generalized-SCIDAR observations at the 1 meter Jacobus Kapteyn
telescope from Febrary 2004 to August 2009, obtaining useful data for 211
nights. The overestimation of the turbulence strength induced during the
generalized SCIDAR data processing has been analyzed for the different
observational configurations. All the individual C2 (h) have been recalibrated
to compensate the introduced errors during data treatment following (Avila &
Cuevas 2009). Comparing results from profiles before and after the
recalibration, we analyze its impact on the calculation of relevant parameters
for adaptive optics.
