group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 24 | 0 | 13 | 8.69 | 179.87 | -18.77 | 83.14 | 0.3207 | 587.8 | 407.7 |
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or next observation for the same group /
back to the solar disc SOHO MDI 2000-08-18 22:23:31 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 3 | 0 | 2 | 7.36 | 183.99 | -14.65 | 87.12 | 0.2523 | 742.0 | 743.6 | |
0 | 10 | 0 | 5 | 8.67 | 182.70 | -15.94 | 82.45 | 0.2751 | 1299.0 | 976.7 | |
0 | 4 | 0 | 2 | 8.98 | 182.69 | -15.96 | 81.31 | 0.2759 | 1048.0 | 963.5 | |
0 | 7 | 0 | 4 | 9.24 | 172.87 | -25.78 | 82.93 | 0.4343 | -738.0 | -749.5 |
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. |