| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 25.24 | 135.95 | 21.72 | 115.49 | 11.85 | 262.98 | 51.66 | 288.87 | 0.8121 | -666.6 | -177.1 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-18 15:00:34 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 |
| 13.02 | 128.33 | 11.25 | 110.53 | 11.92 | 263.83 | 52.51 | 288.58 | 0.8212 | -777.8 | -212.2 | |
| 12.22 | -1.00 | 10.47 | -1.00 | 11.62 | 263.54 | 52.22 | 288.31 | 0.8177 | -1096.7 | 999999 | |
| 0.00 | 0.80 | 0.00 | 0.64 | 17.48 | 258.44 | 47.12 | 297.21 | 0.7882 | -496.0 | -424.1 | |
| 0.00 | 3.37 | 0.00 | 2.14 | 12.92 | 245.83 | 34.51 | 298.29 | 0.6295 | 671.0 | 530.6 | |
| 0.00 | 0.71 | 0.00 | 0.45 | 12.61 | 245.22 | 33.90 | 298.25 | 0.6202 | 741.0 | 661.4 | |
| 0.00 | 1.77 | 0.00 | 1.12 | 13.02 | 245.21 | 33.89 | 298.86 | 0.6226 | 727.0 | 579.8 | |
| 0.00 | 0.97 | 0.00 | 0.61 | 12.72 | 245.06 | 33.74 | 298.54 | 0.6189 | 778.0 | 710.5 | |
| 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. | |