Table 1: Earth orbiting satellites with measurements of high-energy cosmic rays.

SatelliteYearDeviceWeight of device (in tons)Time of active work in spaceComment

Proton-11965SEZ-147 3 months
Proton-21965SEZ-147 3 months
Proton-31966SEZ-147 3 months
Proton-41968IK-1512,5 8 months
Intercosmos-61972Photoemulsions 2,4 4 daysDevice returned to the Earth
Cosmos-15431984SOKOL2,4 27 days
Cosmos-17131986SOKOL2,4 25 days