group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
15 | 82 | 28 | 182 | -38.77 | 263.23 | 67.23 | 227.46 | 0.9746 | 284.9 | 112.5 |
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back to the solar disc SOHO MDI 2000-08-19 03:11:31 UT |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
0 | 6 | 0 | 19 | -37.42 | 268.71 | 72.71 | 230.21 | 0.9876 | 35.0 | 49.1 | |
0 | 19 | 0 | 56 | -37.75 | 268.03 | 72.03 | 229.73 | 0.9864 | -83.0 | 44.4 | |
15 | 53 | 28 | 99 | -39.47 | 259.76 | 63.76 | 225.86 | 0.9660 | 292.1 | 164.5 | |
0 | 3 | 0 | 6 | -40.46 | 259.81 | 63.81 | 224.93 | 0.9679 | -105.0 | 32.7 | |
0 | 1 | 0 | 2 | -40.48 | 259.02 | 63.02 | 224.67 | 0.9654 | 284.0 | 283.3 |
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. |