Iso

Lodders and Fegley (1994)

Podolak and Marley (1991)

Feuchtgruber et al. (1997)

ch4

~0.01 at p > 1.5 bar 0.02 at p > 1.5 bar 0.022 at p > 1.5 bar, 3.5 x 10 +4 (stratosphere) possibly as high as 1.7 x 10+3

Radio occultation Radio occultation Visible reflectance

Tyler et al. (1989) Lindal et al. (1992) Baines and Hammel (1994)

ch4/ ch3d

6 +4 x 10-4 (3.6 ± 0.5) x 10+4

Ground-based 6,100-6,700 cm-1 Ground-based mid-IR

de Bergh et al. (1990) Orton et al. (1992)

ph3

No evidence of strong supersaturation, deep abundance unmeasurable

Ground-based 1-1.5 mm

Encrenaz et al. (1996)

AsH3

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