The heliocentric potential enables the program to adjust for changes in galactic radiation levels that occur with changes in solar activity. 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. To compare CARI-6 or CARI-6M dose estimates with instrument measurements, we recommend using heliocentric potentials appropriate for the days or hours of the measurements. We will provide these heliocentric potentials on request.
| Flights in the Month of | Heliocentric potential in megavolts |
|---|---|
|
Heliocentric potentials for recent months (last 12 months) are preliminary. The data above is based on ground
level neutron measurements provided by Dr. Eduard Vashenyuk of the Apatity Cosmic Ray Station of
the Polar Geophysical Institute, Russia.
|
|
| August 2004 (08/2004) | 617 |
| September 2004 (09/2004) | 587 |
| October 2004 (10/2004) | 503 |
| November 2004 (11/2004) | 605 |
| December 2004 (12/2004) | 583 |
| For The Year 2004 (00/2004) | 628 |
| January 2005 (01/2005) | 723 |
| Februray 2005 (02/2005) | 596 |
| March 2005 (03/2005) | 566 |
| April 2005 (04/2005) | 536 |
| May 2005 (05/2005) | 631 |
| June 2005 (06/2005) | 557 |
| July 2005 (07/2005) | 594 |
| August 2005 (08/2005) | 626 |
| September 2005 (09/2005) | 727 |
| October 2005 (10/2005) | 537 |
| November 2005 (11/2005) | 489 |
| December 2005 (12/2005) | 494 |
| For The Year 2005 (00/2005) | 586 |
| January 2006 (01/2006) | 457 |
| Februray 2006 (02/2006) | 429 |
| March 2006 (03/2006) | 380 |
| April 2006 (04/2006) | 388 |
| May 2006 (05/2006) | 376 |
| June 2006 (06/2006) | 391 |
| July 2006 (07/2006) | 404 |
| August 2006 (08/2006) | 405 |
| September 2006 (09/2006) | 397 |
| October 2006 (10/2006) | 357 |
| November 2006 (11/2006) | 374 |
| December 2006 (12/2006) | 436 |
| January 2007 (01/2007) | 374 |
| February 2007 (02/2007) | 379 |
| March 2007 (03/2007) | 340 |
| April 2007 (04/2007) | 314 |
| May 2007 (05/2007) | 305 |
| June 2007 (06/2007) | 300 |
| July 2007 (07/2007) | 319 |
| August 2007 (08/2007) | 312 |
| September 2007 (09/2007) | 300 |
| October 2007 (10/2007) | 291 |
| November 2007 (11/2007) | 307 |
| December 2007 (12/2007) | 287 |
| For The Year 2007 (00/2007) | 316 |
| January 2008 (01/2008) | 298 |
| February 2008 (02/2008) | 312 |
| March 2008 (03/2008) | 321 |
| April 2008 (04/2008) | 312 |
| May 2008 (05/2008) | 321 |