group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 31 | 0 | 17 | -6.24 | 62.96 | -13.83 | 131.23 | 0.3165 | -58.5 | 78.2 |
previous
or next observation for the same group /
back to the solar disc SOHO MDI 2000-07-31 22:23:31 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 5 | 0 | 3 | -6.40 | 65.30 | -11.48 | 136.71 | 0.2898 | -920.0 | -793.8 | |
0 | 9 | 0 | 5 | -5.69 | 64.47 | -12.32 | 132.95 | 0.2913 | -1110.0 | -732.1 | |
0 | 4 | 0 | 2 | -6.36 | 61.79 | -14.99 | 128.97 | 0.3321 | 866.0 | 735.6 | |
0 | 13 | 0 | 7 | -6.54 | 61.21 | -15.58 | 128.31 | 0.3414 | 930.0 | 842.8 |
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. |