group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
12 | 33 | 7 | 20 | -2.95 | 261.36 | 34.57 | 273.69 | 0.5698 | -710.8 | -129.2 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
10 | 18 | 6 | 11 | -2.81 | 263.16 | 36.37 | 273.57 | 0.5957 | -1090.7 | -747.0 | |
0 | 3 | 0 | 2 | -5.16 | 259.66 | 32.87 | 269.95 | 0.5427 | 791.0 | 711.7 | |
0 | 4 | 0 | 2 | -2.45 | 259.31 | 32.52 | 275.01 | 0.5413 | 704.0 | 430.6 | |
2 | 8 | 1 | 5 | -2.56 | 258.90 | 32.11 | 274.92 | 0.5351 | 985.1 | 669.8 |
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. |