After parsing CSV as an array of objects can't access some property

After parsing CSV:

id,x
1,0.358995018
2,0.196424349
3,0.882696509
4,0.765233761
5,0.25087529

with code

let lines = data.split('\n');
            let props = lines.shift().split(',');
            let objects = [];
            for (let line of lines) {
                let values = line.split(',');
                let obj = {};
                for (let i = 0; i < props.length; i++)
                    obj[props[i]] = isNaN(values[i]) ? values[i] : parseFloat(values[i]);
                objects.push(obj);
            }
            this.data = objects;

can't access last property of any object and for some reason it's double quoted in debugger... What's going on?

can't access property "x"

via Eugene