group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r |
18 | 79 | 9 | 42 | 7.54 | 109.90 | 20.70 | 292.97 | 0.3820 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r |
1 | 67 | 0 | 36 | 7.87 | 110.41 | 21.21 | 293.21 | 0.3916 | |
17 | -1 | 9 | -1 | 7.55 | 110.31 | 21.11 | 292.54 | 0.3882 | |
0 | 6 | 0 | 3 | 7.50 | 109.16 | 19.95 | 293.55 | 0.3707 | |
0 | 6 | 0 | 3 | 7.28 | 105.62 | 16.42 | 297.19 | 0.3166 |
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 |