group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0.00 | 3.95 | 0.00 | 2.59 | 15.39 | 226.61 | 36.99 | 298.11 | 0.6611 | 590.2 | 488.3 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0.00 | 0.90 | 0.00 | 0.63 | 9.61 | 232.83 | 43.21 | 286.91 | 0.7078 | 565.0 | 398.5 | |
0.00 | 1.34 | 0.00 | 0.87 | 16.11 | 225.56 | 35.93 | 299.49 | 0.6500 | 700.0 | 567.3 | |
0.00 | 0.72 | 0.00 | 0.46 | 18.41 | 224.05 | 34.42 | 303.68 | 0.6468 | 405.0 | 282.1 | |
0.00 | 0.99 | 0.00 | 0.63 | 17.98 | 223.72 | 34.09 | 303.33 | 0.6403 | 691.0 | 619.3 |
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. |