group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
17 | 110 | 17 | 101 | 23.41 | 114.49 | 49.98 | 303.38 | 0.8434 | 465.5 | 10.0 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
12 | 85 | 12 | 80 | 22.46 | 116.11 | 51.60 | 301.54 | 0.8519 | 508.6 | 76.5 | |
5 | -1 | 5 | -1 | 22.83 | 115.90 | 51.39 | 302.03 | 0.8516 | 408.6 | 999999 | |
0 | 7 | 0 | 6 | 24.79 | 111.99 | 47.48 | 306.00 | 0.8292 | 249.0 | 341.6 | |
0 | 18 | 0 | 15 | 27.34 | 107.17 | 42.65 | 311.38 | 0.8044 | -478.0 | -477.0 |
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. |