Parses a CSV with daily calories in/out and calculates the average daily caloric deific

CaloricDeficitCalculator.js

var fs = require('fs');
var parse = require('csv-parse');

var consumed = 0; 
var burned = 0;
var numDays = 0; 

var parser = parse({delimiter: ';'}, function(err, data){
	data.forEach(function(data){
		++numDays; 
		calories = String(data).split(","); 		
		consumed += Number(calories[0]); 
		burned += Number(calories[1]); 
	});
	console.log("Summary for " + numDays + " days:"); 
	console.log("Average daily consumption, burned = " + Math.round(consumed / numDays) + ", " + Math.round(burned / numDays)); 
	console.log("Average daily deficit = " + Math.round((burned - consumed) / numDays)); 
});

fs.createReadStream(__dirname+'/calories.csv').pipe(parser);

CSV should have two columns, first calories consumed, then calories burned. E.g.
1833,2346
2581,2627
1901,2758