[Solved]-Highcharts displays series names but missing data points from json source-Highcharts

data should be an array and the y-values should not be strings in your case: data: [[1415602800000,-0.8260],[],...]

here are the acceptable data structures for data within series http://api.highcharts.com/highcharts#series.data

highcharts api also provide a few examples:

http://jsfiddle.net/gh/get/jquery/1.7.2/highslide-software/highcharts.com/tree/master/samples/highcharts/series/data-array-of-arrays/