SGP/CEIL/B5 - Degraded hardware

Following repair at Vaisala and re-installation on 10/23/2007, the ceilometer experiencing 
intermittent receiver alarms and discontinuities in the backscatter plot. Vaisala 
recommended the old firmware card be replaced but that did not resolve the problems. The 
instrument was replaced with a spare and returned to the vendor for repair.

• first_cbh
• status_flag
• alt_highest_signal
• measurement_parameters
• sum_backscatter
• third_cbh
• backscatter
• range
• background_light
• status_string
• laser_temperature
• vertical_visibility
• tilt_angle
• receiver_sensitivity
• second_cbh
• window_contamination
• laser_pulse_energy
• detection_status