group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
4 | 42 | 2 | 23 | 11.02 | 222.90 | 23.38 | 282.05 | 0.3995 | 1033.1 | 748.5 |
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back to the solar disc SOHO MDI 2000-08-18 20:47:31 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 3 | 0 | 2 | 11.43 | 224.94 | 25.41 | 282.21 | 0.4322 | 363.0 | 284.6 | |
0 | 8 | 0 | 4 | 10.39 | 224.45 | 24.92 | 279.92 | 0.4225 | 835.0 | 554.4 | |
4 | 9 | 2 | 5 | 11.11 | 224.24 | 24.72 | 281.68 | 0.4208 | 1153.1 | 903.6 | |
0 | 5 | 0 | 3 | 10.56 | 224.11 | 24.58 | 280.42 | 0.4176 | 1192.0 | 1017.1 | |
0 | 5 | 0 | 3 | 10.97 | 223.83 | 24.31 | 281.48 | 0.4141 | 896.0 | 768.6 | |
0 | 4 | 0 | 2 | 12.63 | 222.36 | 22.83 | 286.14 | 0.3959 | 670.0 | 488.1 | |
0 | 8 | 0 | 4 | 10.89 | 217.32 | 17.80 | 284.19 | 0.3110 | 1043.0 | 894.6 |
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. |