The program employs the user-entered flight date to select the appropriate heliocentric potential from its database. The program will prompt the user in entering heliocentric potentials for dates not already in the database. There may be a lag of up to one month in availability of heliocentric potential data on our Web site. To estimate flight doses during the current month, use the most recent heliocentric potential available. Do not use a heliocentric potential more than two months removed from the month of interest.
Flight doses for specific flight profiles normally change very little in a couple of months.
We will provide these heliocentric potentials on request. The above data is based on ground level neutron measurements provided by Dr. Margaret D. Wilson working under the auspices of the Bartol Research Institute at the University of Delaware and Dr. Eduard Vashenyuk of the Apatity Cosmic Ray Station of the Polar Geophysical Institute, Russia. Reprints are available upon request.