VO2 Max

My VO2 Max is 58.6 which is good for my age group however it is not excellent because it is not over 60.  I found out my VO2 Max by using the beep test score calculator online which takes a person's age as well as their beep test score and then, gives them their VO2 Max.  Even though I am 16 years old, I had to write 18 as my age because the calculator does not accept an age younger than 18 and for my beep test score I wrote 13-5.