cruise_id  date_gmt  
AE1219     07202012  
AE1219     07212012  
AE1219     07222012  
AE1219     07242012  
AE1219     07252012  
AE1219     07262012  
AE1219     07272012  
AE1219     07282012  
AE1219     07292012  
AE1219     07302012