Table 4 Errors calculated for smallest crush of the Zagami meteorite.

From: Evidence for methane in Martian meteorites

Source of error/uncertainty

CO 2

N 2

CH 4

Background instrument noise (1-sigma)

5.20e−13

1.47e−12

1.05e−13

Blank (1-sigma)

2.98e−12

3.37e−11

1.50e−12

Uncertainty in gas composition from standard

4.73e−13

0

1.19e−11

Interference

0

2.92e−13

0

Analytical error (0.5%)

1.18e−13

4.75e−13

2.98e−12

Error in linear range (1%)

2.36e−13

9.50e−13

5.96e−12

Additive error before converting to mols

3.07e−12

3.37e−11

1.37e−11

Conversion current to mols for this crush

3.13e−15 mols

3.24e−14 mols

3.14e−14 mols