group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
8 | 48 | 4 | 24 | -1.98 | 259.08 | -7.28 | 59.59 | 0.1493 | 919.0 | 57.5 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 16 | 0 | 8 | -1.23 | 260.05 | -6.31 | 51.35 | 0.1413 | -777.0 | -706.7 | |
0 | 3 | 0 | 2 | -1.57 | 259.19 | -7.17 | 56.77 | 0.1498 | -281.0 | -154.0 | |
0 | 3 | 0 | 1 | -7.10 | 259.06 | -7.30 | 96.62 | 0.1275 | 520.0 | 501.8 | |
0 | 9 | 0 | 5 | -1.80 | 258.52 | -7.84 | 60.33 | 0.1576 | 641.0 | 296.6 | |
8 | 17 | 4 | 8 | -2.30 | 258.44 | -7.92 | 63.43 | 0.1546 | 1097.6 | 669.7 |
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. |