Table 6. The mean gas calibration factors (CALFAC) obtained during the WOCE Section P6.

 Leg    Cells(n)   CALFAC Mean ± S.D.     Carbon Age Mean ± S.D. (MgC)

System 004 (CRM-based calibration)

 P6E         21         1.004037 ± 0.000777         10.1 ± 9.3

 P6C         21         1.003932 ± 0.000538         10.9 ± 8.3

System 006 (pure-CO2 calibration)

 P6E         24         1.004632 ± 0.000555          5.4 ± 1.6

 P6C         30         1.004535 ± 0.000988          8.5 ± 3.2

 P6W         18         1.004129 ± 0.000755          6.7 ± 1.8

tbeaty 9/30/2001