c3/htdocs/data/c3_test_2.json

{
  "data1": [20, 40, 70, 50, 80, 30],
  "data2": [180, 150, 200, 170, 220, 400],
  "data3": [1200, 1210, 1250, 1300, 1280, 1000]
}