Adding decimal option on table

i have created a table but from the dropdown i have numbers annd not decimal. how can add decimal to the drop down

Can you please post some screenshots of what you are seeing, and what you are expecting to see? That will assist in understanding how best to perhaps what needs to change.

on the column hh1 represents Household waste and the weight in should kiligrams. in some cases the weight has a decimal point, however from the drop down the tool is not giving me and option on decimal point. (see below screen shot for decimal option)

how can i go about it