| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 5.67 | 0.00 | 3.18 | -25.66 | 164.55 | -14.09 | 153.02 | 0.4589 | -384.4 | -334.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-05-18 08:00:38 UT
See sunspots with tool (Click here to study sunspot positions and configurations with tool using white-light and magnetogram images and polarity drawing) (It is recommended to set high resolution on your display!) |
| spot | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 1.26 | 0.00 | 0.65 | -18.91 | 174.58 | -4.06 | 166.83 | 0.2951 | 863.0 | 591.9 | |
| 0.00 | 1.17 | 0.00 | 0.64 | -25.87 | 169.00 | -9.64 | 159.37 | 0.4296 | -738.0 | -602.7 | |
| 0.00 | 0.90 | 0.00 | 0.51 | -29.16 | 165.72 | -12.92 | 156.67 | 0.4951 | -707.0 | -608.5 | |
| 0.00 | 1.08 | 0.00 | 0.60 | -20.72 | 159.29 | -19.35 | 135.74 | 0.4460 | -561.0 | -456.9 | |
| 0.00 | 1.26 | 0.00 | 0.78 | -32.61 | 155.82 | -22.82 | 147.21 | 0.6056 | -779.0 | -613.1 | |
| 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. |
||
| 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. |
||
| 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. | |