Table 5: Elliptical fits of modeled SO2 spatial distribution. G stands for elliptical Gaussian model, D for elliptical disk model. S and F stand for the Spencer et al. (2005) and Feaga et al. (2008) SO2 distribution models.
Hemisphere Gas model Gas temperature Fit type RA ('') Dec ('') Resolved Total flux
    (K)       size ('') (Jy)
Leading S 166 D 0.03 -0.01 0.99 0.95
      G 0.04 -0.01 0.68 0.97
Leading F x 3 175 D 0.045 -0.04 1.06 0.94
      G 0.06 -0.04 0.72 0.96
Leading S* 170 D 0.058 0.00 0.92 0.98
      G 0.06 0.00 0.62 1.00
Leading S ** 180 D 0.066 0.00 0.84 0.94
      G 0.066 0 0.56 0.95
Trailing S x 0.4 160 D -0.14 0.01 0.88 0.51
      G -0.15 0.02 0.61 0.52
Trailing F x 1.3 155 D -0.05 0.03 1.11 0.47
      G -0.08 0.03 0.76 0.48
Trailing (S x 0.4)** 180 D -0.08 0.00 0.78 0.48
      G -0.09 0.00 0.52 0.49
Trailing (S x 0.4)*** 210 D -0.06 0.00 0.70 0.45
      G -0.06 0.00 0.46 0.46
* Indicates a distribution restricted to SZA < 70$^{\circ }$. ** Indicates a distribution restricted to SZA < 60$^{\circ }$. *** Indicates a distribution restricted to SZA < 50$^{\circ }$. Ellipse orientation is fixed to the data fit value (-16$^{\circ }$ for the leading, -6$^{\circ }$ for the trailing).

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