group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0.00 | 6.99 | 0.00 | 4.29 | 16.96 | 225.19 | 30.03 | 305.55 | 0.5898 | 432.5 | 426.1 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0.00 | 1.25 | 0.00 | 0.84 | 12.69 | 234.31 | 39.15 | 292.93 | 0.6711 | -497.0 | -460.7 | |
0.00 | 3.05 | 0.00 | 1.84 | 17.96 | 223.45 | 28.29 | 308.10 | 0.5751 | 768.0 | 675.6 | |
0.00 | 1.70 | 0.00 | 1.03 | 18.48 | 223.40 | 28.24 | 308.89 | 0.5787 | 807.0 | 674.3 | |
0.00 | 0.99 | 0.00 | 0.58 | 17.28 | 220.70 | 25.54 | 309.83 | 0.5382 | 652.0 | 470.5 |
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. |