| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 0.00 | 13.66 | 0.00 | 7.25 | 14.57 | 185.46 | -5.47 | 14.85 | 0.3547 | 198.3 | 414.7 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-04-20 04:00:34 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 | 0.71 | 0.00 | 0.38 | 15.48 | 194.08 | 3.15 | 351.47 | 0.3586 | -733.0 | -525.2 | |
| 0.00 | 1.42 | 0.00 | 0.78 | 20.50 | 188.55 | -2.38 | 5.13 | 0.4373 | -693.0 | -583.2 | |
| 0.00 | 1.06 | 0.00 | 0.55 | 12.46 | 187.68 | -3.25 | 10.35 | 0.3097 | 824.0 | 694.0 | |
| 0.00 | 7.45 | 0.00 | 3.88 | 12.00 | 186.11 | -4.82 | 15.55 | 0.3080 | 360.0 | 595.4 | |
| 0.00 | 1.60 | 0.00 | 0.86 | 16.37 | 181.53 | -9.40 | 23.16 | 0.4004 | 709.0 | 628.1 | |
| 0.00 | 1.42 | 0.00 | 0.80 | 20.35 | 177.90 | -13.03 | 26.22 | 0.4804 | 723.0 | 531.2 | |
| 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. | |