February 4, 1999



19990204.180307_mk4

Center =206.65+/-1.26 degrees PA (SW quadrant) (red radial line)
Maximum height = 1.39+/-0.02 Rsun
Width (at 1.20 Rsun) = 19.36+/-1.38 degrees latitude (measured between edges -- vertical dashed lines at inflection points)
Width (at 1.29 Rsun) = 14.98+/-1.13 degrees latitude
Cavity depletion, equatorward (1.20 Rsun) = 0.34+/-0.039 (ratio of red to blue dashed line)
Cavity depletion, poleward (1.20 Rsun) = 0.13+/-0.050 (ratio of green to blue dashed line) Minimum intensity in cavity (1.20 Rsun) = 2.3e-07+/-2.3e-09 (Bsun) (blue dashed lines);
Slope at equatorward cavity edge (1.20 Rsun) = 3.4e-08+/-4.5e-09 (Bsun/degree)
Slope at poleward cavity edge (1.20 Rsun) = 1.3e-08+/-7.8e-09 (Bsun/degree)

length lower limit = 2 days visible in white light at limb February 4; -5 (CME!);

Also visible Dec 12-19 1998
Evolution comments = orig. CME case -- but turns out same PCF-S as Dec 1998 system, but different piece of PCF linked to cavity, and PCF evolved to connect S PCF with higher, angled CF resulting in a kinked PCF (with kink near Feb 4/5 cavity/CME)

Neutral line orientation at the limb =
CME/dimmings association = CME February 5;

Active region association = N/A

Filament/FC association = PCF-S; N/A

Other comments: N/A

Filament - visible in white light

Necking - straight up and down neck


Cavity list (e.g. Tables 2 + 3)
Full list of cavity days observed
List of best cavity days (SET 1) observed (e.g. Table 1)
CMEs associated with cavities (e.g. Tables 7 + 8)
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