NOTES  (1) Oxygen has been calculated using Oxygen voltage, Temperature and Salinity from Up casts. The reason - Oxigen voltage is 'bad' at most Leg 3 Down casts, Up casts look reasonable.  (2) Salinity and Temperature used for Oxygen calculation are Primary for all the stations prior to #171 and Secondary starting from this station and further on. The reason - Primary Conductivity  problem.