1.    A group D diver is out of the water for 2 hours.  
What is her new group?
               
answer
2.    A group G diver is out of the water for 1 hour.  
What is her new group?
               
answer
3.    A group F diver is out of the water for 30 minutes.  
What is her new group?
               
answer
4.    A group I diver is out of the water for 9 hours.  
What is her new group?
               
answer