group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0.00 | 8.24 | 0.00 | 5.07 | 17.39 | 224.70 | 30.10 | 305.96 | 0.5929 | 422.5 | 480.8 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0.00 | 0.99 | 0.00 | 0.66 | 12.68 | 234.32 | 39.71 | 292.64 | 0.6777 | -476.0 | -426.9 | |
0.00 | 3.49 | 0.00 | 2.12 | 17.97 | 223.45 | 28.84 | 307.61 | 0.5813 | 799.0 | 697.3 | |
0.00 | 1.88 | 0.00 | 1.15 | 18.49 | 223.39 | 28.79 | 308.40 | 0.5849 | 745.0 | 580.9 | |
0.00 | 1.88 | 0.00 | 1.14 | 17.92 | 222.78 | 28.18 | 308.15 | 0.5735 | 622.0 | 504.0 |
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. |