group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
2.54 | 7.80 | 3.07 | 9.45 | -14.69 | 253.62 | 64.33 | 252.87 | 0.9141 | 499.3 | 387.5 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0.00 | 0.54 | 0.00 | 0.66 | -14.76 | 253.82 | 64.53 | 252.83 | 0.9155 | 363.0 | 305.0 | |
2.54 | 4.72 | 3.07 | 5.70 | -14.53 | 253.54 | 64.26 | 253.03 | 0.9134 | 527.6 | 414.0 | |
0.00 | 2.54 | 0.00 | 3.09 | -14.98 | 253.72 | 64.43 | 252.57 | 0.9151 | 549.0 | 382.7 |
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. |