Ranking order for age range is wrong, how do I change this?

Hi,
So I am looking at the results of my survey, specifcally in the report section and the ranking of my field is going from 2-7 instead of 1-7 for the question identifying the age of the respondant. This is throwing off my min, max and std deviation.
I have attached a picture if I haven't explained that very well.
Is there anyway I can go about changing this, so it goes from 1-6?