| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 1.36 | 17.97 | 0.69 | 9.11 | 16.71 | 82.73 | -2.00 | 8.96 | 0.2132 | -104.5 | -314.5 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-07-18 20:00:40 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 | 1.18 | 0.00 | 0.60 | 16.54 | 84.43 | -0.29 | 1.36 | 0.2068 | -810.0 | -546.1 | |
| 0.00 | 9.62 | 0.00 | 4.87 | 16.66 | 83.48 | -1.25 | 5.72 | 0.2099 | -685.0 | -877.2 | |
| 0.00 | 0.91 | 0.00 | 0.46 | 16.66 | 82.84 | -1.88 | 8.61 | 0.2113 | -554.0 | -393.4 | |
| 0.00 | 1.00 | 0.00 | 0.51 | 17.03 | 81.56 | -3.16 | 13.82 | 0.2218 | 705.0 | 594.8 | |
| 1.36 | 5.26 | 0.69 | 2.67 | 16.78 | 81.18 | -3.54 | 15.71 | 0.2193 | 1237.5 | 924.9 | |
| 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. | |