group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
3.92 | 23.71 | 7.40 | 45.19 | -22.39 | 155.31 | 71.03 | 244.94 | 0.9650 | 266.1 | 14.2 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
3.31 | 19.96 | 6.65 | 40.53 | -22.56 | 156.32 | 72.04 | 245.01 | 0.9703 | 378.4 | 31.4 | |
0.00 | 1.57 | 0.00 | 2.00 | -20.80 | 147.28 | 63.00 | 244.66 | 0.9234 | -91.0 | -113.4 | |
0.61 | 2.18 | 0.75 | 2.66 | -21.04 | 146.00 | 61.72 | 244.04 | 0.9159 | -253.3 | -156.5 |
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. |