SGP/TSI/C1 - Water on lens

After a rain episode, drops of water collected on the lens window causing the cloud 
fraction values to be suspect.

To prevent this, a drip edge was formed around the bottom of the enclosure with thick 
electrical or splicing tape.

• count.sky
• count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• region.zenith.count.thin
• region.zenith.count
• count.thin
• Cloud amount, thin (percent)(percent.thin)
• region.zenith.count.opaque

SGP/TSI/C1 - Mirror contamination

The surface of the chrome mirror was soiled causing the cloud fraction determination to be 
unreliable.

• count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• count.thin
• Cloud amount, thin (percent)(percent.thin)

SGP/TSI/C1 - Data processing problem

Values of count_opaque and count_thin are reals but should be integers  (units = pixels).

• count.opaque
• count.thin

SGP/TSI/C1 - Reprocessing Notice (RID 951)

See below for details of reprocessing that was completed on 20140922.  Original 
DQR category: 5 (Transparent - Does not affect quality).

-----------------------------------------------------------

The units of global attributes region_sun_radius and region_zenith_radius should be 
degrees, not pixels.

• base_time

SGP/TSI/C1 - Camera misalignment

The camera was slightly out of alignment causing the west edge of the image to be cropped. 
The position of the camera was adjusted so it was centered over the mirror.

• region.horizon.count
• count.box
• count.sub.horz

SGP/TSI/C1 - Shadowband misalignment

The shadowband was misaligned.

• count.opaque
• region.sun.count.opaque
• region.sun.count.thin
• region.horizon.count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count.thin
• sun.strength
• region.zenith.count.thin
• count.thin
• Cloud amount, thin (percent)(percent.thin)
• region.zenith.count.opaque

SGP/TSI/C1 - Icing event

An icing event (winter storm Cara) passed slowly through the area during this time frame.  
The TSI image was affected by ice accumulation on the mirror.

• region.horizon.count
• region.horizon.count.opaque
• count.sub.horz
• region.horizon.count.thin
• count.mask
• region.zenith.count.thin
• region.zenith.count
• count.thin
• Cloud amount, thin (percent)(percent.thin)
• count.sub.proczen
• region.zenith.count.opaque
• count.sky
• Sunshine Meter(sunny)
• region.sun.count.opaque
• count.opaque
• region.sun.count
• region.sun.count.thin
• Cloud amount, opaque (percent)(percent.opaque)
• sun.strength

SGP/TSI/C1 - Ice storm

The TSI images were affected by an ice storm that caused the mirror to be covered with 
ice, the shadowband to stop rotating, and condensation to blur the images.

• Sunshine Meter(sunny)
• count.opaque
• region.sun.count.opaque
• region.sun.count.thin
• region.horizon.count.opaque
• Cloud amount, opaque (percent)(percent.opaque)
• region.horizon.count.thin
• sun.strength
• region.zenith.count.thin
• count.thin
• Cloud amount, thin (percent)(percent.thin)
• region.zenith.count.opaque

SGP/TSI/C1 - power failure

An ice storm caused the SGP site to lose power.

• region.horizon.count.opaque
• solar.altitude
• count.mask
• region.zenith.count.thin
• region.zenith.count
• count.unknown
• count.sub.proczen
• North latitude(lat)
• region.zenith.count.opaque
• count.sky
• region.sun.count.opaque
• count.opaque
• region.sun.count.thin
• East longitude(lon)
• solar.azimuth
• region.horizon.count
• region.horizon.count.thin
• count.sub.horz
• Altitude above mean sea level(alt)
• Cloud amount, thin (percent)(percent.thin)
• count.thin
• base_time
• Sunshine Meter(sunny)
• region.sun.count
• count.box
• Cloud amount, opaque (percent)(percent.opaque)
• sun.strength
• time_offset

SGP - Data System Upgrades: Data Missing

The data system was undergoing upgrades.  Data were lost during this period.

• region.horizon.count.opaque
• solar.altitude
• count.mask
• count_thin
• count.unknown
• region.zenith.count
• Cloud amount, thin (percent)(percent_thin)
• count.sub.proczen
• North latitude(lat)
• region.zenith.count.opaque
• count.sky
• region.sun.count.opaque
• region_sun_count_opaque
• qc_region_zenith_count_thin
• qc_count_box
• qc_region_sun_count_thin
• qc_percent_thin
• region_zenith_count_thin
• count_sub_horz
• count.sub.horz
• Cloud amount, thin (percent)(percent.thin)
• count_unknown
• Sunshine Meter(sunny)
• solar_azimuth
• region.sun.count
• region_horizon_count_opaque
• count.box
• region_sun_count_thin
• qc_region_sun_count_opaque
• qc_count_sky
• count_opaque
• count_box
• sun_strength
• qc_solar_azimuth
• time
• qc_count_unknown
• region.zenith.count.thin
• qc_region_sun_count
• qc_region_horizon_count_thin
• qc_region_zenith_count
• qc_sun_strength
• count.opaque
• region.sun.count.thin
• qc_percent_opaque
• solar_altitude
• region_horizon_count
• East longitude(lon)
• count_mask
• solar.azimuth
• region.horizon.count
• qc_region_zenith_count_opaque
• count_sub_proczen
• region_sun_count
• qc_solar_altitude
• region_zenith_count_opaque
• region_zenith_count
• region.horizon.count.thin
• Altitude above mean sea level(alt)
• qc_region_horizon_count
• qc_count_mask
• count.thin
• qc_count_sub_proczen
• base_time
• qc_time
• qc_sunny
• Cloud amount, opaque (percent)(percent_opaque)
• qc_count_sub_horz
• Cloud amount, opaque (percent)(percent.opaque)
• sun.strength
• qc_region_horizon_count_opaque
• qc_count_thin
• region_horizon_count_thin
• qc_count_opaque
• time_offset
• count_sky

SGP/TSI/C1 - Reprocess: Corrupt properties file

The YYYMMDDHHMMSS_tsi.properties files were corrupted when the computer operating system 
was upgraded, causing the ingest to assign incorrect values to attributes opaque_thresh, 
thin_thresh, cam_mir_dist, and center_x. A default properties file from 5/25/2004 was 
briefly used and then a properties file from 10/11/2013 was being concatenated to the current 
properties file before it was moved to the ingest directory, so that the last values 
read were from the earlier date.

• base_time