SGP/MPL/C1 - Reduced detection sensitivity

During the time periods indicated, the laser power supply was low.  This resulted in 
compromised detection sensitivity, particularly for thin clouds and/or during daylight hours.  
That is, some clouds may not have been identified.  The low laser power would not have 
resulted in false positives.

Some clouds may not have been detected.

• Preliminary cloud base height above ground level(preliminary_cbh)

• Cloud base height (for first cloud above height threshold)(cloud_base_height)
• Altitude of cloud top used in retrieval(cloud_top_height)
• Cloud mask(cloud_mask_2)
• Flag indicating whether the beam was extinguished at indicated cloud top(cloud_top_attenuation_flag)
• Cloud mask(cloud_mask_1)

• MPL Cloth et al. Algorithm Cloud Mask(CloudMaskMplCloth)

• MPL Cloth et al. Algorithm Significance Mask(SigniMaskMplCloth)