Measurement of Air Pollution from Satellites instrument carried in shuttle bay; measured the distribution of carbon monoxide in the Earth's lower atmosphere (3 to 10 kilometers above the surface), from latitude 57 degrees North to latitude 57 degrees South.
Status: Operational 1994. First Launch: 1994-04-09. Last Launch: 1994-09-30. Number: 2 . Apogee: 211 km (131 mi).