I got a table with values for age, gender, percentiles like
BOYS
AGE 5% 10% 25%
6 100 115 127
7 112 116 129

GIRLS
AGE 5% 10% 25%
6 100 115 127
7 112 116 129

If I have those values of the book and i want to get the value that
corresponde in the table. How I can do it?