group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
8 | 30 | 5 | 20 | -2.54 | 261.45 | 39.93 | 273.35 | 0.6443 | -851.8 | -217.5 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
8 | 17 | 5 | 11 | -2.85 | 263.29 | 41.77 | 272.54 | 0.6683 | -1027.2 | -776.9 | |
0 | 4 | 0 | 3 | -2.36 | 259.55 | 38.03 | 273.94 | 0.6193 | 97.0 | 125.4 | |
0 | 5 | 0 | 3 | -2.63 | 259.11 | 37.59 | 273.60 | 0.6129 | 962.0 | 678.0 | |
0 | 4 | 0 | 3 | -1.50 | 258.93 | 37.42 | 275.46 | 0.6124 | 771.0 | 595.3 |
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. |