group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
3 | 20 | 2 | 16 | -25.94 | 271.25 | 42.07 | 230.68 | 0.7807 | 565.7 | 181.3 |
previous
or next observation for the same group /
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 | 2 | 0 | 2 | -26.37 | 275.65 | 46.47 | 232.67 | 0.8191 | -413.0 | -370.8 | |
0 | 5 | 0 | 4 | -25.49 | 271.04 | 41.86 | 231.09 | 0.7765 | -398.0 | -384.3 | |
3 | 13 | 2 | 10 | -26.04 | 270.45 | 41.28 | 230.12 | 0.7747 | 759.9 | 517.9 |
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. |