| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 4.88 | 16.60 | 8.16 | 26.22 | -8.69 | 247.72 | 72.18 | 262.51 | 0.9494 | 300.8 | 205.2 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-21 08:00:35 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 |
| 4.17 | 10.74 | 7.25 | 18.74 | -8.65 | 249.53 | 73.99 | 262.47 | 0.9598 | 340.3 | 132.1 | |
| 0.71 | 4.44 | 0.91 | 5.69 | -8.62 | 243.28 | 67.75 | 262.77 | 0.9240 | 381.0 | 347.6 | |
| 0.00 | 1.15 | 0.00 | 1.47 | -9.24 | 243.12 | 67.58 | 262.10 | 0.9228 | 420.0 | 390.1 | |
| 0.00 | 0.27 | 0.00 | 0.32 | -9.62 | 241.46 | 65.93 | 261.73 | 0.9114 | -177.0 | -143.3 | |
| 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. | |