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Table T9. Replicate analyses of a rock standard to establish typical precision of total carbon, total nitrogen, and total sulfur contents of sediment samples, Expedition 317. (See table note.)

Analysis
no.
N
(wt%)
C
(wt%)
S
(wt%)
1 0.533 3.60 1.56
2 0.644 3.68 1.65
3 0.536 3.55 1.58
4 0.577 3.67 1.63
5 0.585 3.61 1.62
6 0.601 3.71 1.60
7 0.581 3.62 1.65
8 0.597 3.64 1.63
9 0.599 3.60 1.58
10 0.593 3.67 1.65
Mean: 0.58 3.64 1.62
Standard deviation: 0.032 0.046 0.032
Coefficient of variation: 0.06 0.01 0.02

Note: Rock standard from Weatherford Laboratories (#99986; PWDR5).

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