TWP/VCEIL/C2 - Nauru Vceil data suspect

During this period the ceilometer began producing a cross-talk warning. Since it is a 
warning, some of the data are OK. However, the instrument began to be limited to detecting 
clouds only about 2 km above the ground.

only use for boundary layer cloud studies.

• Altitude of highest signal(alt_highest_signal)
• Warning, alarm, and internal status information(status_string)
• Second lowest cloud base height(second_cbh)
• Distance to the center of the corresponding range bin(range)
• Detection status.(detection_status)
• Sum of detected and normalized backscatter(sum_backscatter)
• Third cloud base height(third_cbh)
• Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
• Flag indicating aeri retrieval status(status_flag)
• Aerosol volume backscattering coefficient at 355 nm(backscatter)
• Vertical visibility(vertical_visibility)

• Vertical visibility(vertical_visibility)
• Aerosol volume backscattering coefficient at 355 nm(backscatter)
• Second lowest cloud base height(second_cbh)
• Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
• Distance to the center of the corresponding range bin(range)
• Warning, alarm, and internal status information(status_string)
• Lowest cloud base height detected(first_cbh)
• Third cloud base height(third_cbh)
• Flag indicating aeri retrieval status(status_flag)
• Altitude of highest signal(alt_highest_signal)
• Sum of detected and normalized backscatter(sum_backscatter)