group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
1.61 | 6.35 | 0.88 | 3.50 | 15.51 | 227.70 | 17.66 | 318.32 | 0.4411 | 407.0 | 169.7 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0.00 | 1.79 | 0.00 | 1.02 | 12.87 | 235.43 | 25.39 | 303.06 | 0.5007 | -721.0 | -626.6 | |
0.00 | 1.07 | 0.00 | 0.58 | 15.21 | 226.06 | 16.02 | 319.72 | 0.4136 | 814.0 | 645.8 | |
0.00 | 1.34 | 0.00 | 0.73 | 15.97 | 225.40 | 15.36 | 322.08 | 0.4161 | 785.0 | 658.3 | |
1.61 | 2.15 | 0.88 | 1.17 | 17.67 | 223.21 | 13.18 | 328.58 | 0.4183 | 796.9 | 784.0 |
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. |