The range gate data were not normalized during this period because, when the CL31 was
first deployed, I was uncertain about this parameter and returned it to its default setting
of "off". Range gate normalization was enabled after receiving the following from Vaisala:
''We do recommend to keep this 'profile noise_h2' setting on. If 'profile noise_h2' is
off, then range correction of the signal would freeze at 2400 m, unless the algorithm has
detected a cloud region. This had been designed to make profiles in CL-VIEW look less noisy
and to emphasize the presence of clouds.''