group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
29 | 129 | 29 | 127 | -17.97 | 163.15 | -60.41 | 107.07 | 0.8666 | 258.3 | 47.2 |
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back to the solar disc SOHO MDI 2000-04-02 22:23:33 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
6 | 15 | 5 | 14 | -18.17 | 167.13 | -56.43 | 107.58 | 0.8326 | -855.2 | -721.0 | |
0 | 3 | 0 | 2 | -18.40 | 166.56 | -57.00 | 107.80 | 0.8380 | -339.0 | -268.9 | |
5 | 30 | 5 | 27 | -17.76 | 166.21 | -57.36 | 107.01 | 0.8408 | -469.0 | -317.2 | |
18 | 81 | 19 | 84 | -17.99 | 161.42 | -62.14 | 106.99 | 0.8812 | 749.0 | 299.9 |
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. |