group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
7 | 38 | 5 | 31 | -39.12 | 270.55 | -25.97 | 154.41 | 0.7856 | -114.3 | -102.3 |
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back to the solar disc SOHO MDI 2000-08-11 12:47:31 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
3 | 22 | 2 | 17 | -38.53 | 273.31 | -23.21 | 156.24 | 0.7676 | -670.1 | -580.3 | |
2 | -1 | 1 | -1 | -38.16 | 273.05 | -23.47 | 155.77 | 0.7652 | -720.3 | 999999 | |
0 | 4 | 0 | 3 | -39.31 | 270.22 | -26.30 | 154.17 | 0.7890 | 468.0 | 319.0 | |
2 | 12 | 2 | 11 | -40.16 | 266.52 | -30.00 | 151.90 | 0.8137 | 686.4 | 521.5 |
Proj. U | - Projected umbra area in millionths of solar disc, negative values indicate | |
that the umbra consists of fragmented regions which cannot be separated without losing umbral area. In this way several spots (intensity minima in the umbra) have a common umbra, e.g. -2 means that the given spot shares an umbra with spot No.2, and the common U value is indicated at spot No.2. |
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Proj. WS | - Projected whole spot area in millionths of solar disc, negative values indicate | |
that several umbras have a common penumbra, e.g. -7 means that the given umbra shares a penumbra with umbra No.7, and the WS value is indicated at No.7. |
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Corr. U | - Corrected umbra area in millionths of solar hemisphere, for negative values see above | |
Corr. WS | - Corrected whole spot area in millionths of solar hemisphere, for negative values see above | |
B | - Heliographic latitude B; positive: North, negative: South | |
L | - Heliographic longitude L | |
LCM | - Longitudinal distance from the Sun's central meridian | |
Pos. angle | - Position angle | |
r | - Distance from the centre of Sun's disc in terms of Sun's radius | |
MU | - Mean magnetic field within the umbra contour averaged the pixel values with sign. | |
MP | - Mean magnetic field within the penumbra contour averaged the pixel values with sign. |