The 0.0.0 is the sex ratio of animals that you have male.female.unsexed
So 1.0 is 1 male no female and 1.2 is 1 male and 2 females so on and so forth. Feel free to post questions or if you feel silly its fine to pm me.
Since you used the 0.0.0 example you should add that 1.1.1 means 1male 1 female and 1 unsexed