TWP/VCEIL/C3 - Data collection problem

There was a bad connection between the ceilometer and the instrument computer which 
resulted in a small amount of data loss on 8 days during the effected period.  The data that 
were collected are not effected by the problem.  On April 11, 34% of the data was lost and 
on April 1, 4% was lost.  On the remaining 6 days, May 1-6, the amount of data lost was 
less than 2%/day.

• Vertical visibility(vertical_visibility)
• Third cloud base height(third_cbh)
• Laser temperature(laser_temperature)
• 6 character string describing instrument measurement parameters(measurement_parameters)
• -180.0 - +180.0(alt)
• Detection status.(detection_status)
• Flag indicating aeri retrieval status(status_flag)
• lon(lon)
• Warning, alarm, and internal status information(status_string)
• Millivolts at internal ADC input (0 to 2500)(background_light)
• Lowest cloud base height detected(first_cbh)
• Altitude of highest signal(alt_highest_signal)
• Aerosol volume backscattering coefficient at 355 nm(backscatter)
• Degrees from vertical (-15 to +90)(tilt_angle)
• Second lowest cloud base height(second_cbh)
• Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
• base time in epoch(base_time)
• Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
• Window contamination(window_contamination)
• Sum of detected and normalized backscatter(sum_backscatter)
• Time offset from base_time(time_offset)
• Distance to the center of the corresponding range bin(range)
• North Latitude(lat)

• (Raw data stream - documentation not supported)