group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r |
6 | 15 | 11 | 24 | 7.59 | 81.21 | -73.16 | 84.11 | 0.9551 |
next day for the same group /
back to the solar disc SDO HMI 2016-08-15 04:58:46 UT ![]() |
spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r |
4 | 13 | 7 | 22 | 7.44 | 81.28 | -73.09 | 84.28 | 0.9548 | |
2 | -1 | 4 | -1 | 7.73 | 81.15 | -73.22 | 83.96 | 0.9553 | |
0 | 1 | 0 | 1 | 7.96 | 81.04 | -73.33 | 83.71 | 0.9558 | |
0 | 1 | 0 | 1 | 8.20 | 80.93 | -73.44 | 83.45 | 0.9562 |
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 |