group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
15 | 56 | 19 | 67 | -11.66 | 233.82 | -62.70 | 106.15 | 0.9073 | 575.5 | 454.6 |
previous
or next observation for the same group /
back to the solar disc SOHO MDI 2000-08-11 12:47:31 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 10 | 0 | 11 | -11.04 | 236.93 | -59.60 | 106.24 | 0.8836 | 294.0 | 376.5 | |
0 | 7 | 0 | 8 | -11.45 | 236.46 | -60.06 | 106.57 | 0.8880 | 698.0 | 572.5 | |
15 | 39 | 19 | 48 | -11.84 | 232.67 | -63.85 | 106.06 | 0.9159 | 577.2 | 452.8 |
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. |