group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r |
17 | 48 | 9 | 26 | -9.01 | 320.27 | 21.00 | 241.04 | 0.4053 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r |
17 | 31 | 9 | 17 | -9.39 | 321.80 | 22.53 | 242.05 | 0.4298 | |
0 | 4 | 0 | 2 | -9.58 | 321.06 | 21.78 | 240.86 | 0.4207 | |
0 | 4 | 0 | 2 | -8.63 | 318.17 | 18.89 | 239.51 | 0.3731 | |
0 | 3 | 0 | 2 | -8.45 | 316.52 | 17.24 | 237.64 | 0.3487 | |
0 | 6 | 0 | 3 | -7.10 | 314.96 | 15.69 | 238.74 | 0.3153 |
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 |