| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 3.99 | 17.99 | 2.15 | 9.72 | 13.48 | 284.63 | 11.11 | 331.79 | 0.3998 | -191.9 | -40.3 | |
|
previous
or next observation for the same group /
back to the solar disc SDO HMI 2014-03-17 15:00:30 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 |
| 1.04 | 3.65 | 0.56 | 1.97 | 12.63 | 286.34 | 12.83 | 327.09 | 0.4004 | -942.9 | -714.6 | |
| 0.52 | 4.78 | 0.28 | 2.58 | 12.75 | 286.10 | 12.58 | 327.75 | 0.3999 | -1017.3 | -931.3 | |
| 1.65 | -2.00 | 0.89 | -2.00 | 12.62 | 286.03 | 12.51 | 327.72 | 0.3976 | -1038.8 | 999999 | |
| 0.78 | 2.87 | 0.42 | 1.55 | 12.87 | 285.76 | 12.24 | 328.61 | 0.3986 | -1060.7 | -840.7 | |
| 0.00 | 1.30 | 0.00 | 0.71 | 15.07 | 282.83 | 9.31 | 337.42 | 0.4088 | 761.0 | 664.1 | |
| 0.00 | 1.39 | 0.00 | 0.75 | 14.90 | 282.54 | 9.03 | 337.90 | 0.4046 | 976.0 | 772.8 | |
| 0.00 | 4.00 | 0.00 | 2.16 | 14.63 | 281.84 | 8.33 | 339.21 | 0.3965 | 1152.0 | 885.2 | |
| 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. | |