1.    What is the maximum time you can stay at 70 feet?
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2.    What is the maximum time you can stay at 82 feet?
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3.    What is your group if you stay 25 minutes at 60 feet?
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4.    What is your group if you stay 45 minutes at 50 feet?
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5.    What is your group if you stay 20 minutes at 65 feet?
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6.    What is your group if you stay 23 minutes at 73 feet?
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