Great :).
What about the labels though? in this case the "name"?
$data = array(
    'data' => array(
        array(
            'name' => 'data 1',
            'values' => array(10),
        ),
        array(
            'name' => 'data 2',
            'values' => array(20),
        ),
        array(
            'name' => 'data 3',
            'values' => array(50),
        ),
        array(
            'name' => 'data 4',
            'values' => array(25),
        ),
    ),
);
 
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