19981215.190844

December 15, 1998

19981215.190844_mk4

Center =196.42+/-0.76 degrees PA (SW quadrant) (red radial line)	Maximum height = 1.29+/-0.01 Rsun
Width (at 1.20 Rsun) = 7.80+/-0.55 degrees latitude (measured between edges -- vertical dashed lines at inflection points)	Width (at 1.24 Rsun) = 5.04+/-0.98 degrees latitude
Cavity depletion, equatorward (1.20 Rsun) = 0.14+/-0.077 (ratio of red to blue dashed line)	Cavity depletion, equatorward (at 1.24 Rsun) = 0.10+/-0.055 (ratio of red to blue dashed line)
Cavity depletion, poleward (1.20 Rsun) = 0.34+/-0.067 (ratio of green to blue dashed line) Minimum intensity in cavity (1.20 Rsun) = 2.0e-07+/-6.5e-09 (Bsun) (blue dashed lines);	Cavity depletion, poleward (1.24 Rsun) = 0.30+/-0.060 (ratio of green to blue dashed line) Minimum intensity in cavity (1.24 Rsun) = 1.8e-07+/-7.7e-09 (Bsun) (blue dashed lines);
Slope at equatorward cavity edge (1.20 Rsun) = -3.1e-08+/-8.0e-09 (Bsun/degree)	Slope at equatorward cavity edge (1.24 Rsun) = 6.7e-09+/-3.6e-09 (Bsun/degree)
Slope at poleward cavity edge (1.20 Rsun) = -2.6e-08+/-4.6e-09 (Bsun/degree)	Slope at poleward cavity edge (1.24 Rsun) = -3.0e-08+/-3.6e-09 (Bsun/degree)

length lower limit = 8 days visible in white light at limb December 12; -13; -14; -15*; -16; -17; -18; -19 (CME!);
Also visibile Feb 4-5 1999
Evolution comments = PCF-S which erupts Dec 19 -- visible in Mk4, but not great quality. Also visible Feb 4-5 1999.

Neutral line orientation at the limb =
CME/dimmings association = CME December 19; prominence eruption on December 19;
Active region association = N/A
Filament/FC association = PCF-S; PCF
Other comments: N/A
Filament - visible in white light
Necking - bulging 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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