Table 1 Composition of quartz and basalt blanks.

From: Evidence for methane in Martian meteorites

Gas

Qtz blank mean (mols)

Qtz blank s.d. (mols)

Basalt blank mean (mols)

Basalt blank s.d. (mols)

H2

5.1E−15

1.31E−14

3.01E−15

4.09E−15

He

Below detection

0

2.12E−16

2.50E−16

CH4

4.14E−14

2.08E−14

6.62E−16

1.42E−15

N2

2.84E−15

3.2E−14

1.14E−12

6.81E−13

O2

1.1E−15

4.7E−16

0

0

Ar

1E−16

1.6E−16

3.01E−16

5.37E−16

CO2

4.5E−15

2.83E−15

5.50E−11

4.27E−11

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