| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 4.91 | 17.54 | 3.00 | 10.59 | -23.97 | 116.56 | 31.52 | 236.61 | 0.5742 | 160.9 | 56.6 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-03-31 22:00:32 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 |
| 3.86 | 6.14 | 2.36 | 3.75 | -23.59 | 117.84 | 32.80 | 238.08 | 0.5872 | 788.8 | 624.2 | |
| 0.00 | 0.88 | 0.00 | 0.53 | -23.71 | 117.33 | 32.29 | 237.56 | 0.5818 | 667.0 | 539.8 | |
| 0.00 | 1.84 | 0.00 | 1.12 | -24.17 | 117.07 | 32.03 | 236.67 | 0.5814 | 583.0 | 450.5 | |
| 0.44 | 2.63 | 0.27 | 1.59 | -23.77 | 116.81 | 31.77 | 237.13 | 0.5759 | 653.4 | 629.0 | |
| 0.00 | 3.51 | 0.00 | 2.09 | -24.43 | 115.11 | 30.07 | 234.89 | 0.5598 | -635.0 | -597.2 | |
| 0.61 | 1.49 | 0.37 | 0.89 | -24.42 | 114.84 | 29.80 | 234.71 | 0.5565 | -814.1 | -815.5 | |
| 0.00 | 1.05 | 0.00 | 0.62 | -24.43 | 113.90 | 28.86 | 233.96 | 0.5455 | -743.0 | -626.2 | |
| 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. | |