| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 2.44 | 16.18 | 1.34 | 8.92 | 12.99 | 285.38 | 16.28 | 321.15 | 0.4380 | -239.7 | -294.7 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-03-17 23:00:30 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 |
| 0.35 | 2.26 | 0.19 | 1.25 | 12.62 | 286.68 | 17.58 | 318.41 | 0.4458 | -801.2 | -690.0 | |
| 2.09 | 3.74 | 1.15 | 2.07 | 12.70 | 286.40 | 17.30 | 319.00 | 0.4439 | -885.2 | -703.1 | |
| 0.00 | 1.91 | 0.00 | 1.06 | 12.85 | 286.06 | 16.95 | 319.78 | 0.4422 | -874.0 | -725.9 | |
| 0.00 | 3.48 | 0.00 | 1.92 | 12.68 | 285.85 | 16.75 | 319.87 | 0.4381 | -925.0 | -747.8 | |
| 0.00 | 1.83 | 0.00 | 1.00 | 11.68 | 285.15 | 16.05 | 319.54 | 0.4190 | 510.0 | 308.8 | |
| 0.00 | 1.22 | 0.00 | 0.67 | 15.00 | 282.67 | 13.57 | 328.74 | 0.4385 | 675.0 | 595.3 | |
| 0.00 | 1.74 | 0.00 | 0.95 | 14.82 | 281.93 | 12.83 | 329.93 | 0.4301 | 826.0 | 666.2 | |
| 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. | |