MAG/TSI/M1 - Ship mast in field-of-view

The mast of Horizon Spirit cargo ship was in the field-of-view of the TSI and contributed 
to the calculated fractional sky cover amount (i.e. the ship's mast was interpreted as a 
cloud). This effect is most apparent during clear sky periods and negligible during 
overcast periods.

An algorithm will be developed to remove the contribution of the ship's mast to the 
fractional sky cover determination.

• Pixel count: number total thin(count_thin)
• Pixel count: number total opaque(count_opaque)
• Percent opaque cloud(percent_opaque)
• Pixel count: number thin in zenith circle(region_zenith_count_thin)
• Percent thin cloud(percent_thin)
• Pixel count: number opaque in zenith circle(region_zenith_count_opaque)