Table 3: Saturn and Uranus physical characteristics (Conrath & Gautier 2000; de Graauw et al. 1997; Baines et al. 1995; Conrath et al. 1987; Lindal 1992).
  Saturn Uranus
Rotation period 10.2 h 17.9 h
Equatorial radius 60 268 km 25 559 km
Polar radius 54 364 km 24 973 km
H2 molar fraction 0.8606 0.8320
He molar fraction 0.135 0.152
CH4 molar fraction 4.4 $\times $ 10-3 1.6 $\times $ 10-4

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