group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
16 | 41 | 9 | 25 | -2.50 | 261.47 | 31.16 | 275.35 | 0.5211 | -601.2 | -208.3 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
12 | 21 | 7 | 13 | -2.73 | 263.02 | 32.71 | 274.49 | 0.5436 | -1185.1 | -774.9 | |
0 | 5 | 0 | 3 | -2.33 | 262.45 | 32.14 | 275.36 | 0.5360 | -542.0 | -495.6 | |
0 | 3 | 0 | 2 | -1.18 | 259.13 | 28.82 | 278.61 | 0.4894 | 707.0 | 544.2 | |
0 | 3 | 0 | 2 | -2.36 | 259.10 | 28.79 | 276.24 | 0.4861 | 869.0 | 767.0 | |
4 | 9 | 2 | 5 | -2.57 | 258.75 | 28.44 | 275.90 | 0.4803 | 1158.7 | 746.2 |
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. |