groupProj. UProj. WSCorr. UCorr. WS BLLCMPos. angler MU MP

8788 153 983 114 725 9.84 312.10 46.54 284.33 0.7350 157.9 8.3


previous   or   next   observation for the same group / back to the solar disc

SOHO MDI 1999-12-12 11:11:32 UT

No observation available


spotProj. UProj. WSCorr. UCorr. WSBLLCMPos. angler MU MP

1 92 546 75 444 9.51 317.30 51.74 282.49 0.7954 805.0 336.7
2 5 -1 4 -1 10.33 317.29 51.73 283.51 0.7967 648.6 999999
3 0 8 0 6 9.57 315.21 49.65 282.96 0.7735 919.0 837.8
4 0 7 0 6 10.27 315.12 49.56 283.87 0.7737 435.0 343.7
5 0 5 0 4 8.56 314.72 49.17 281.74 0.7665 205.0 230.2
6 0 4 0 3 5.70 314.31 48.75 278.07 0.7580 206.0 217.4
7 2 8 2 6 9.07 314.70 49.14 282.40 0.7670 818.1 725.8
8 0 4 0 3 9.92 314.86 49.30 283.47 0.7703 498.0 476.8
9 0 3 0 2 8.17 303.42 37.86 283.88 0.6281 -334.0 -373.4
10 26 370 16 234 10.18 303.28 37.72 287.06 0.6322 -1283.7 -579.3
11 5 -10 3 -10 10.33 302.42 36.86 287.62 0.6215 -1380.7 999999
12 16 -10 10 -10 10.92 302.25 36.70 288.60 0.6214 -1527.4 999999
13 0 16 0 10 9.44 302.06 36.50 286.35 0.6138 -1107.0 -921.7
14 7 -10 4 -10 11.31 302.26 36.70 289.20 0.6229 -1125.9 999999
15 0 4 0 2 9.05 301.82 36.26 285.81 0.6093 -567.0 -469.0
16 0 8 0 5 8.57 299.53 33.98 285.90 0.5768 -974.0 -792.3


  • 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.