group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
23 | 119 | 20 | 113 | -18.02 | 163.06 | -58.74 | 107.24 | 0.8524 | 121.5 | 149.5 |
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back to the solar disc SOHO MDI 2000-04-03 01:35:33 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
6 | 17 | 5 | 15 | -18.21 | 167.25 | -54.55 | 107.81 | 0.8150 | -841.0 | -664.6 | |
5 | 22 | 4 | 19 | -17.86 | 166.41 | -55.39 | 107.30 | 0.8227 | -563.6 | -263.1 | |
0 | 3 | 0 | 3 | -18.04 | 165.81 | -55.99 | 107.47 | 0.8285 | -351.0 | -295.4 | |
12 | 77 | 11 | 76 | -18.02 | 161.28 | -60.52 | 107.11 | 0.8682 | 816.7 | 430.9 |
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. |