group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
17 | 102 | 30 | 192 | -38.82 | 263.41 | 63.88 | 226.44 | 0.9645 | 322.9 | 113.8 |
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back to the solar disc SOHO MDI 2000-08-18 20:47:31 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
3 | 31 | 7 | 74 | -37.72 | 268.62 | 69.09 | 229.05 | 0.9792 | -30.2 | 12.5 | |
5 | 66 | 8 | 109 | -39.20 | 260.33 | 60.80 | 225.16 | 0.9553 | 546.4 | 165.5 | |
9 | -2 | 15 | -2 | -39.55 | 260.11 | 60.59 | 224.75 | 0.9553 | 366.6 | 999999 | |
0 | 5 | 0 | 9 | -40.42 | 259.51 | 59.98 | 223.73 | 0.9550 | 457.0 | 321.5 |
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. |