group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
4.57 | 8.79 | 4.58 | 8.88 | 24.05 | 214.90 | 53.22 | 302.91 | 0.8729 | 13.4 | -24.6 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
1.81 | 3.19 | 1.91 | 3.35 | 24.35 | 216.34 | 54.66 | 302.60 | 0.8841 | -439.8 | -383.9 | |
0.00 | 1.12 | 0.00 | 1.19 | 24.56 | 216.42 | 54.74 | 302.79 | 0.8854 | -228.0 | -220.1 | |
1.64 | 1.98 | 1.58 | 1.91 | 23.25 | 213.39 | 51.72 | 302.72 | 0.8593 | 453.1 | 476.8 | |
1.12 | 2.50 | 1.09 | 2.43 | 24.03 | 213.35 | 51.68 | 303.56 | 0.8619 | 391.5 | 412.9 |
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. |