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ALPHA Quad
ETA Quad
NU Quad
TAU Quad
BETA Quad
THETA Quad
XI Quad
UPSILON Quad
15 Degree Time-Zones A-F (0 to 90E)
Sector = 1 Degree Square = ~60 x 60 km (@ Equator)
Tile = 6' x 6' ArcMinutes = ~6 x 6 km (@ Equator)
Click = 1' x1' ArcMinute = ~1 x 1 km (@ Equator)
Source: USGS & MarsX Plan