Simpson Neutron Monitor Network, USA

University of Delaware / Bartol

Bartol operates 9 neutron monitors in the United States, Canada, Greenland and Antarctica. Seven of these are part of Spaceship Earth.

University of New Hampshire / UNH

UNH has operated up to 6 neutron monitors.

University of Wisconsin / UW

UW took over the operation of the South Pole NMs from Bartol.