Table 2: Per volume abundances of He, O and C elements in the water-poor Uranian subnebula. He, CO, and H₂O are the dominant species with hydrogen gas in the water-poor subnebula.
Species X_i X_i/H₂

He 0.18

O 0.05

C 0.023

CO 0.023

H₂O 0.027

**Table 2:** Per volume abundances of He, O and C elements in the water-poor Uranian subnebula. He, CO, and H₂O are the dominant species with hydrogen gas in the water-poor subnebula.
Species X_i	X_i/H₂
He	0.18
O	0.05
C	0.023
CO	0.023
H₂O	0.027

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