This contour map shows angle in ecliptic plane (degree) of IMF (interplanetary magnetic field) observed by IMP8 for each Bartels rotation.

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White area: toward sector (255-360-45 degree)

Hatched area: away sector (45-180-225 degree)

According to this contour map, the sector structure changed from 4-sector to 2-sector during September-November 1993.

Caution: The data is interpolated to fill data gaps.

written by Shinichi Watari (a guest researcher at NOAA/SEL)
Communications Research Lab.,
Koganei, Tokyo 184 Japan

e-mail : watari@crl.go.jp

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Back to S. Watari Web Page

Last modified December 2, 1996