| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 7.63 | 0.00 | 4.41 | 17.88 | 100.51 | 13.81 | 332.60 | 0.5150 | 633.4 | 495.7 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-03-31 19:00:31 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 | 1.05 | 0.00 | 0.63 | 8.53 | 117.72 | 31.02 | 295.62 | 0.5674 | 713.0 | 625.3 | |
| 0.00 | 0.79 | 0.00 | 0.48 | 19.98 | 110.32 | 23.62 | 319.31 | 0.5798 | 703.0 | 505.4 | |
| 0.00 | 1.23 | 0.00 | 0.73 | 17.84 | 109.79 | 23.09 | 317.29 | 0.5526 | 576.0 | 401.8 | |
| 0.00 | 1.31 | 0.00 | 0.74 | 16.16 | 103.82 | 17.13 | 323.45 | 0.4769 | 647.0 | 488.0 | |
| 0.00 | 0.88 | 0.00 | 0.48 | 17.48 | 97.63 | 10.94 | 335.96 | 0.4460 | 659.0 | 474.1 | |
| 0.00 | 1.49 | 0.00 | 0.86 | 23.58 | 83.74 | -2.96 | 5.38 | 0.5064 | 588.0 | 564.8 | |
| 0.00 | 0.88 | 0.00 | 0.49 | 20.86 | 82.22 | -4.48 | 9.01 | 0.4680 | 548.0 | 371.0 | |
| 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. | |