group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
4 | 19 | 3 | 17 | -22.37 | 352.52 | 48.94 | 237.32 | 0.8301 | -348.9 | -97.7 |
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or next observation for the same group /
back to the solar disc SOHO MDI 2000-08-10 23:59:31 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 3 | 0 | 3 | -21.61 | 353.63 | 50.05 | 238.70 | 0.8363 | -403.0 | -347.2 | |
4 | 10 | 3 | 9 | -22.46 | 353.78 | 50.20 | 237.84 | 0.8408 | -403.6 | -310.7 | |
0 | 6 | 0 | 5 | -22.67 | 349.57 | 45.99 | 235.55 | 0.8071 | 525.0 | 435.3 |
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. |