group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 36 | 0 | 103 | 15.84 | 310.17 | 80.99 | 285.27 | 0.9837 | 93.5 | -19.4 |
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back to the solar disc SOHO MDI 2000-07-20 10:05:31 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 19 | 0 | 43 | 13.46 | 307.33 | 78.16 | 282.72 | 0.9767 | -31.0 | -69.9 | |
0 | 8 | 0 | 39 | 17.65 | 314.91 | 85.73 | 287.30 | 0.9958 | -92.0 | -126.5 | |
0 | 4 | 0 | 10 | 17.24 | 308.81 | 79.63 | 286.63 | 0.9814 | 83.0 | 155.3 | |
0 | 5 | 0 | 11 | 17.50 | 305.70 | 76.53 | 286.83 | 0.9701 | 414.0 | 398.5 |
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. |