| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 7.80 | 0.00 | 4.45 | 17.33 | 187.22 | 18.28 | 322.94 | 0.4891 | -57.4 | -231.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-21 20:00:34 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 | 1.06 | 0.00 | 0.66 | 15.93 | 199.40 | 30.47 | 305.40 | 0.6004 | -524.0 | -443.8 | |
| 0.00 | 2.66 | 0.00 | 1.53 | 17.25 | 190.25 | 21.31 | 317.13 | 0.5123 | -736.0 | -650.7 | |
| 0.00 | 1.77 | 0.00 | 1.01 | 20.54 | 184.18 | 15.24 | 330.16 | 0.4969 | -629.0 | -517.9 | |
| 0.00 | 0.80 | 0.00 | 0.44 | 16.23 | 182.49 | 13.56 | 328.05 | 0.4271 | 703.0 | 565.6 | |
| 0.00 | 1.51 | 0.00 | 0.81 | 15.22 | 177.93 | 9.00 | 336.42 | 0.3788 | 899.0 | 665.2 | |
| 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. | |