| Description: An integer representing three bits. Each bit represents a geometric calculation asking whether the upper limb of the sun is above the lunar limb (including terrain) at (bit 0) the spectrum’s timestamp, (bit 1) 1 second before the start of data collection, and (bit 2) 1 second after the end of data collection. The 1 second buffers were chosen to be slightly conservative. A value of 0 means ‘definitely in shadow’ and 7 means ‘definitely in sun’. Intermediate reflect intermediate knowledge. |