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.

• Raw data stream - documentation not supported(Raw data stream - documentation not supported)

• Vertical visibility(vertical_visibility)
• SUM of detected and normalized backscatter(sum_backscatter)
• Time offset of tweaks from base_time(time_offset)
• Second lowest cloud base height(second_cbh)
• Time offset from base_time(base_time)
• Laser temperature(laser_temperature)
• Altitude of highest signal(alt_highest_signal)
• Warning and alarm status bits(status_string)
• Millivolts at internal ADC input (0 to 2500)(background_light)
• north latitude for all the input platforms.(lat)
• Degrees from vertical (-15 to +90)(tilt_angle)
• Lowest cloud base height detected.(first_cbh)
• Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
• east longitude for all the input platforms.(lon)
• Aerosol volume backscattering coefficient at 355 nm(backscatter)
• Flag indicating aeri retrieval status(status_flag)
• altitude above sea levelaltunits(alt)
• Third cloud base height(third_cbh)
• 6 character string describing instrument measurement parameters(measurement_parameters)
• Millivolts at internal ADC input(window_contamination)
• Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
• distance to center of range bin after correcting for offset in sync(range)
• Detection status. See details(detection_status)