group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 22 | 0 | 12 | 22.77 | 243.96 | -23.06 | 49.25 | 0.4574 | 309.7 | 277.1 |
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or next observation for the same group /
back to the solar disc SOHO MDI 2000-09-09 23:59:31 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 8 | 0 | 4 | 21.26 | 256.22 | -10.80 | 35.59 | 0.3015 | 906.0 | 837.5 | |
0 | 7 | 0 | 4 | 22.04 | 243.76 | -23.26 | 54.14 | 0.4537 | -800.0 | -684.9 | |
0 | 7 | 0 | 4 | 25.00 | 231.89 | -35.13 | 58.02 | 0.6171 | 823.0 | 678.6 |
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. |