group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
30 | 116 | 31 | 123 | -6.89 | 54.18 | 60.91 | 258.80 | 0.8861 | 15.8 | -137.6 |
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spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
13 | 63 | 14 | 69 | -7.74 | 55.20 | 61.94 | 258.07 | 0.8955 | -755.5 | -456.5 | |
1 | -1 | 1 | -1 | -8.04 | 55.03 | 61.76 | 257.70 | 0.8947 | -701.0 | 999999 | |
-1 | -1 | -1 | -1 | -7.82 | 54.80 | 61.53 | 257.90 | 0.8926 | 999999 | 999999 | |
16 | 53 | 16 | 54 | -5.78 | 52.89 | 59.62 | 259.77 | 0.8742 | 735.4 | 316.2 | |
-4 | -4 | -4 | -4 | -5.95 | 52.60 | 59.34 | 259.51 | 0.8721 | 999999 | 999999 |
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. |