| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 1.72 | 12.42 | 0.97 | 6.96 | 16.78 | 85.72 | 25.80 | 297.35 | 0.4708 | -98.7 | -309.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-07-20 17:00:40 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 | 4.99 | 0.00 | 2.82 | 16.92 | 86.73 | 26.81 | 296.81 | 0.4854 | -854.0 | -657.1 | |
| 1.72 | 4.35 | 0.97 | 2.44 | 16.42 | 85.88 | 25.95 | 296.47 | 0.4708 | -1017.3 | -752.5 | |
| 0.00 | 1.36 | 0.00 | 0.75 | 17.18 | 83.91 | 23.99 | 299.62 | 0.4486 | 676.0 | 643.8 | |
| 0.00 | 1.72 | 0.00 | 0.95 | 16.99 | 83.75 | 23.82 | 299.39 | 0.4451 | 773.0 | 653.2 | |
| 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. | |