SIL_cruise_id  PMEL_cruise_id  
PWZ04A         CW2004_02       
PWZ04B         CW2004_06       
PWZ04C         nd              
PWZ04D         CW2004_09       
PWZ05A         CW2005_02       
PWZ05B         CW2005_04       
PWZ05C         CW2005_07       
PWZ05D         CW2005_08       
PWZ05E         CW2005_09