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Table T2. Mean total (biological + chemical) and chemical activity in samples measured as heat output by microcalorimetry, Sites C0014, C0015, and C0017.

  Total activity
at 25°C
(µW/g)
Total activity
at 90°C
(µW/g)
Chemical activity
at 90°C
(µW/g)
Number of samples
measured
Anaerobic conditions <0.1 30 25 40
Aerobic conditions 18 100 50 22

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