group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
13 | 72 | 25 | 166 | -38.79 | 263.07 | 67.95 | 227.64 | 0.9766 | 294.2 | 134.9 |
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back to the solar disc SOHO MDI 2000-08-19 04:47:31 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 6 | 0 | 18 | -37.41 | 268.15 | 73.03 | 230.29 | 0.9882 | 51.0 | 51.6 | |
0 | 16 | 0 | 50 | -37.75 | 267.99 | 72.87 | 229.92 | 0.9882 | 13.0 | 44.9 | |
13 | 47 | 25 | 92 | -39.51 | 259.66 | 64.54 | 226.06 | 0.9686 | 299.9 | 199.5 | |
0 | 3 | 0 | 6 | -40.65 | 259.15 | 64.03 | 224.81 | 0.9689 | 102.0 | 143.1 |
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. |