group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 27 | 0 | 16 | -3.03 | 256.61 | 28.04 | 254.71 | 0.4886 | 374.5 | 348.0 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 9 | 0 | 5 | -3.03 | 257.50 | 28.93 | 255.21 | 0.5016 | 821.0 | 570.6 | |
0 | 8 | 0 | 5 | -3.00 | 256.91 | 28.34 | 254.94 | 0.4929 | 717.0 | 616.2 | |
0 | 5 | 0 | 3 | -2.61 | 256.00 | 27.43 | 255.23 | 0.4779 | 475.0 | 375.6 | |
0 | 5 | 0 | 3 | -3.49 | 255.23 | 26.66 | 252.97 | 0.4703 | -515.0 | -497.6 |
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. |