group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
23 | 84 | 21 | 76 | -7.11 | 53.68 | 55.13 | 257.23 | 0.8368 | -167.4 | -149.0 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
13 | 49 | 12 | 45 | -7.86 | 54.38 | 55.82 | 256.53 | 0.8448 | -861.9 | -530.1 | |
0 | 2 | 0 | 2 | -7.54 | 53.54 | 54.98 | 256.68 | 0.8365 | -301.0 | -351.5 | |
1 | 33 | 1 | 29 | -6.22 | 52.83 | 54.27 | 258.05 | 0.8271 | 385.3 | 468.6 | |
8 | -3 | 7 | -3 | -5.84 | 52.63 | 54.08 | 258.46 | 0.8244 | 819.0 | 999999 | |
1 | -3 | 1 | -3 | -6.25 | 52.29 | 53.73 | 257.88 | 0.8219 | 842.0 | 999999 |
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. |