cruise_id  cruise_start_date  cruise_end_date  date_start  
NH1006     20100603           20100616         20100604    
NH1006     20100603           20100616         20100605    
NH1006     20100603           20100616         20100606    
NH1006     20100603           20100616         20100607    
NH1006     20100603           20100616         20100608    
NH1006     20100603           20100616         20100609    
NH1006     20100603           20100616         20100610    
NH1006     20100603           20100616         20100611    
NH1006     20100603           20100616         20100612    
NH1006     20100603           20100616         20100613    
NH1006     20100603           20100616         20100614    
NH1006     20100603           20100616         20100615    
NH1006     20100603           20100616         20100616