group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
27 | 180 | 16 | 109 | 3.05 | 270.89 | 34.38 | 268.30 | 0.5662 | -1534.0 | -627.0 |
previous
or next observation for the same group /
back to the solar disc SOHO MDI 2000-07-19 20:47:31 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 4 | 0 | 3 | 2.47 | 272.80 | 36.29 | 267.55 | 0.5940 | 441.0 | 447.0 | |
0 | 8 | 0 | 5 | 2.83 | 271.98 | 35.47 | 268.04 | 0.5820 | -445.0 | -267.0 | |
27 | 168 | 16 | 101 | 3.08 | 270.78 | 34.27 | 268.33 | 0.5646 | -1572.3 | -676.7 |
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. |