SDO HMI 2014-03-31 17:00:31 UT
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| group | Proj. U | Proj. WS | Corr. U | Corr. WS | B | L | LCM | Pos. angle | r | MU | MP |
| 1.84 | 31.30 | 3.82 | 84.52 | -8.28 | 7.84 | -79.96 | 97.23 | 0.9812 | 320.3 | 121.1 | |
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back to the solar disc SDO HMI 2014-03-31 17:00:31 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 |
| 1.84 | 20.08 | 3.82 | 42.80 | -8.38 | 10.92 | -76.89 | 97.05 | 0.9719 | 571.3 | 312.6 | |
| 0.00 | 3.51 | 0.00 | 7.93 | -8.40 | 9.76 | -78.04 | 97.17 | 0.9764 | -36.0 | -17.1 | |
| 0.00 | 7.71 | 0.00 | 33.79 | -8.12 | 3.50 | -84.30 | 97.47 | 0.9940 | -282.0 | -67.4 | |
| Proj. U | - Projected umbra area in millionths of solar disc, negative values indicate | |
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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. |
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| Proj. WS | - Projected whole spot area in millionths of solar disc, negative values indicate | |
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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. |
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| 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. | |