group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
13 | 35 | 8 | 22 | -11.21 | 174.59 | 34.32 | 243.93 | 0.6182 | -953.8 | -510.4 |
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back to the solar disc SOHO MDI 2000-07-27 03:16:31 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
13 | 24 | 8 | 15 | -11.85 | 174.83 | 34.56 | 243.12 | 0.6247 | -974.1 | -489.6 | |
0 | 6 | 0 | 4 | -10.13 | 174.21 | 33.94 | 245.27 | 0.6073 | -364.0 | -550.9 | |
0 | 5 | 0 | 3 | -9.42 | 173.93 | 33.66 | 246.19 | 0.6000 | -730.0 | -560.7 |
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. |