{ "elements":[ { "type": "line", "colour": "#736AFF", "text": "Avg. wave height (cm)", "font-size": 10, "width": 1, "dot-style": { "type":"star", "dot-size": 6, "tip":"#val#
#x_label#" }, "values" : [3,0,-3] } ], "y_axis":{ "min": -5, "max": 5 } }