JSON sample for multiple Highcharts charts

multichartdata.json

{
	"datasets": [
		{
			"name": "Product Track 1",
			"data": [
				[1462381981000, 50],
				[1462411981000, 80],
				[1462473601000, 100],
				[1462478701000, 40],
				[1462569181000, 60]
			],
			"unit": "ml/s",
			"type": "line",
			"valueDecimals": 1
		},
		{
			"name": "H202 Pressure",
			"data": [
				[1462381981000, 0],
				[1462544401000, 40],
				[1462554401000, null],
				[1462567181000, 60],
				[1462569181000, 70]
			],
			"unit": "mbar",
			"type": "area",
			"valueDecimals": 0
		},
		{
			"name": "Air flow",
			"data": [
				[1462381981000, 100],
				[1462386001000, 90],
				[1462459201000, 80],
				[1462532701000, 90],
				[1462541581000, 50],				
				[1462558701000, 70],
				[1462569181000, 80]
			],
			"unit": "ml",
			"type": "area",
			"valueDecimals": 0
		},
		{
			"name": "Valve error Track 1",
			"data": [
				[1462381981000, 1],
				[1462386001000, 0],
				[1462459201000, 1],
				[1462472701000, 0],
				[1462491581000, 1],				
				[1462569181000, 0]
			],
			"unit": "",
			"type": "line",
			"step": "left",
			"steps": 1,
			"max": 1
		}
	]
}