[![Tree plotted](https://i.stack.imgur.com/7FwjI.png)](https://i.stack.imgur.com/7FwjI.png)

My classification is a 0-1 classification.So what exactly are the numbers at the bottom telling me [ why are they negative and all] ? Also what do the NAs mean? Do they say that this particular feature is not classified on a numeric comparison hence NA like BreedName?

Here are the columns of my data and 'L' is the 0-1 column i.e my y.
[![Data](https://i.stack.imgur.com/3uekX.png)](https://i.stack.imgur.com/3uekX.png)

Ques2- This tree 0 is the main model right since i have done cv(n=3) and i have got 4 trees [0,1,2,3] and whatever i interpret should be based on the 0th tree right?